7200 tours par minute

Which is better 7200RPM or 5400rpm?

Hard disk drive (HDD) speed, measured in revolutions per minute (RPM), is an important factor that affects the drive’s performance and responsiveness. Most consumer HDDs today come in either 5400RPM or 7200RPM variants. The RPM speed determines how fast the platters inside the HDD spin, which in turn affects how quickly data can be read from or written to them.

HDDs with higher RPM speeds generally have faster access times and better data transfer rates. However, faster HDDs also tend to generate more heat, use more power, and produce more noise. So there are tradeoffs to consider when choosing between 5400RPM and 7200RPM HDDs.

This article provides an in-depth comparison of 7200RPM and 5400RPM hard drives. It examines the performance differences, power consumption, noise levels, reliability, and pricing between the two speed classes. We’ll also provide recommendations for which RPM HDD is best suited for different use cases.

Table of Contents

What is Spindle Speed?

Spindle speed refers to the rotational speed of a hard disk drive’s spindle measured in revolutions per minute (RPM). The spindle is the central shaft in the hard drive that rotates the platters containing the data. A faster rotational speed means data can be accessed quicker.

Spindle speed directly correlates with the hard drive’s performance and speed. The faster the platters spin, the faster data can be written or read from the surface. Higher RPM drives typically have faster access times and data transfer rates.

Traditional consumer hard drives often have spindle speeds of 5400 RPM or 7200 RPM. Server drives can have speeds of 10,000 RPM or 15,000 RPM for even better performance. The tradeoff is that higher spindle speeds require more power, generate more heat, and produce more noise from the mechanical motion.

7200RPM Drives

7200RPM hard drives feature faster rotational speeds compared to 5400RPM drives, resulting in quicker data access and overall better performance [1] . The faster spinning platters allow for faster read and write speeds, lower latency, and snappier loading times.

7200RPM drives excel in desktop PCs and workstations where performance is critical. The faster speeds make them ideal for tasks like gaming, video editing, 3D rendering, and other performance-intensive applications [2] .

Popular 7200RPM hard drive models include the Seagate BarraCuda, Western Digital Black, and Toshiba X300. The Seagate BarraCuda line offers capacities up to 8TB along with cache sizes up to 256MB. The Western Digital Black drives are optimized for heavier computing tasks and come in capacities up to 6TB [3] .

5400RPM Drives

5400rpm hard drives are designed to offer quiet and cool operation while providing ample storage capacities at budget-friendly price points. They excel in general home and office use cases where performance is not the top priority.

Some of the key features and benefits of 5400rpm drives include:

• Lower power consumption and operating temperatures compared to 7200rpm drives, allowing for quieter and cooler operation.
• Generally lower cost per gigabyte of storage capacity.
• Well-suited for secondary data storage, backups, media libraries, and other applications where maximum performance is not critical.

Top 5400rpm hard drive models for desktop use include:

• Seagate Barracuda – Available in capacities up to 8TB with 64MB cache. Offers a balance of value and reliable performance. (1)
• Western Digital Blue – Capacities up to 6TB and cache up to 256MB. Known for cool, quiet operation.
• Toshiba P300 – Up to 3TB capacity. Budget-friendly option good for everyday computing.

Performance Comparison

When looking at synthetic benchmarks, 7200RPM drives consistently outperform 5400RPM drives in measures like sequential read/write speeds, random access times, and overall throughput. For example, tests have shown average sequential read speeds of 120-150MB/s on 7200RPM drives compared to 80-100MB/s on 5400RPM drives (Source) . Random access times are typically around 8-9ms for 7200RPM and 9-11ms for 5400RPM.

However, in real-world usage the performance difference is less noticeable, especially for general computing tasks. Most everyday workflows involve a mix of sequential and random operations. The larger caches on newer 5400RPM drives help narrow the gap in random I/O performance (Source) . For things like launching applications, loading files, or booting up, many users report small if any perceivable difference between the two speeds.

The more sequential heavy the workload, the bigger the performance advantage 7200RPM drives demonstrate. This is seen most in file transfer speeds when reading/writing large files, as well as in professional media editing workflows. For gaming and running demanding software, 7200RPM drives can provide a slight edge in load times.

In summary, 7200RPM objectively has better performance metrics, but is not necessarily a transformative difference at normal HDD capacities for general use. For power users that do heavy file operations or workloads sensitive to storage speed, the extra speed of 7200RPM drives is more impactful.

Power and Noise

7200 RPM hard drives generally consume more power than 5400 RPM drives. This is because the platter spins faster in a 7200 RPM drive, requiring more energy to maintain that speed. According to tests by Unraid Forum , a Western Digital Red 6TB 7200 RPM drive consumed around 6.5 Watts at idle versus 4.5 Watts for a WD Red 5400 RPM drive.

The faster spin speed also generates more noise and vibration. In objective lab testing by Storage Review, a 7200 RPM drive measured 36 dBA versus 33 dBA for a 5400 RPM drive during sequential write operations. While a 3 dB difference may not seem significant, it equates to over twice as loud to human perception. At idle, the difference was even greater, with the 7200 RPM drive at 31 dBA versus 27 dBA for the 5400 RPM model.

Increased power draw also results in more heat output. According to tests by TrueNAS Community , drive temperatures positively correlated with power consumption. 7200 RPM drives ran 3-5°C hotter than 5400 RPM drives under sustained workload. Proper cooling is important, as high temperatures negatively impact HDD reliability.

Reliability

When it comes to reliability, there are a few key factors to consider between 7200 RPM and 5400 RPM hard drives:

MTBF (Mean Time Between Failures) is one way to measure reliability. Higher MTBF indicates less frequent failures. According to Backblaze data , 5400 RPM drives had a slightly higher MTBF on average than 7200 RPM drives (1.5 million hours vs 1.4 million hours).

Failure rates can also shed light on reliability differences. In general, 5400 RPM drives tend to have lower failure rates than 7200 RPM. For example, Backblaze data showed 5400 RPM drives had a 1.5% annualized failure rate, while 7200 RPM drives failed at 2.2% per year.

Some of this comes down to physics. The faster spinning platters in 7200 RPM drives generate more heat and are under greater mechanical stress. This can lead to earlier failures compared to 5400 RPM drives, which spin slower and experience less wear and tear over time.

Overall, 5400 RPM hard drives tend to be more reliable and have longer usable lifespans on average compared to their 7200 RPM counterparts when used in similar operating environments.

When comparing prices between 7200RPM and 5400RPM hard drives, 7200RPM drives tend to be slightly more expensive. The price difference is generally around $10-20 for the same storage capacity.

For example, a 4TB 5400RPM hard drive may cost around $90 while a 4TB 7200RPM drive costs $110. On a cost per TB basis, this works out to about $22-25 per TB for 5400RPM drives and $27-30 per TB for 7200RPM. So you’re paying a small premium for the faster spindle speed of 7200RPM.

For budget-focused builds where storage space is a priority over peak performance, 5400RPM drives provide excellent value. But for gaming rigs and performance-centric builds, the extra cost of 7200RPM is usually worth it.

Overall, 7200RPM drives range from about 10-20% more expensive than 5400RPM models. So if your budget allows, 7200RPM is recommended for the performance boost. But 5400RPM can still provide plenty of storage capacity at a lower price point.

https://www.reddit.com/r/buildapc/comments/8e5gye/how_different_is_the_5400_rpm_vs_7200_rpm/

https://linustechtips.com/topic/1407500-how-big-is-the-difference-between-5400-rpm-and-7200-rpm/

Use Case Recommendations

When choosing between 7200RPM and 5400RPM hard drives, consider how you plan to use the drive.

Best for Desktop

For general desktop use, a 7200RPM drive provides better performance for opening programs and files. The faster speed makes a noticeable difference in everyday use. However, a 5400RPM drive runs quieter and cooler which some prefer for office environments.

Best for NAS

In a NAS (network attached storage) a 7200RPM drive is preferable for frequently accessed data due to the faster speeds. For archival storage and backups that are accessed less often, a 5400RPM drive provides adequate performance at a lower cost. Overall capacity needs should also be considered.

Best for Gaming

For gaming PCs, a 7200RPM drive is strongly recommended as the primary drive for installing games. The faster load times compared to a 5400RPM drive provide a better gameplay experience. For storing media files, older games, or backups, a 5400RPM drive offers sufficient speeds at a lower price point.

Budget Pick

Those looking for the most affordable storage option should consider 5400RPM drives. While performance is slower, 5400RPM drives provide adequate speeds for basic tasks at the lowest cost per GB. For budget gaming builds, pair a small 7200RPM primary drive with a larger 5400RPM storage drive.

Capacity Considerations

Higher capacity 5400RPM drives tend to have similar sustained transfer rates as 7200RPM drives, due to higher areal density. For drives 4TB or larger, there is minimal real-world speed difference between 5400RPM and 7200RPM. [1] Therefore capacity needs should trump rotation speed when choosing large drives.

When comparing 7200RPM and 5400RPM hard drives, 7200RPM drives are clearly the performance winner. They have faster data transfer speeds, lower access times, and snappier response when loading programs and files. The average user will notice a significant boost in system performance by using a 7200RPM drive as their primary drive.

That said, for secondary data drives that are used for basic file storage and backups, a 5400RPM drive is likely sufficient. The slightly slower speeds are less noticeable for these secondary tasks, and 5400RPM drives run cooler, quieter, and potentially have longer lifespans. So for secondary or external backup drives, 5400RPM remains a good choice.

In summary, the key differences are that 7200RPM drives are faster, more responsive, draw more power, run hotter, and are noisier. 5400RPM drives prioritize quiet operation, efficiency, and longevity over top-end speed. For primary boot or application drives where performance matters most, 7200RPM is recommended. For secondary storage needs, 5400RPM drives strike a nice balance.

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5400 RPM vs 7200 RPM: Is RPM Still Important?

Nowadays, many users would like to use SSDs, but there are still some users prefer to use HDDs because of the lower price, larger capacity, etc. If you are one of them, you may be confused about 5400 RPM vs 7200 RPM hard drives. In this post, MiniTool will explain their differences to you.

How different is the 5400 RPM vs 7200 RPM performance in the latest drives? … I understand that 5400RPM is quieter and more reliable than 7200, but it is also slower or should be slower… However, when I looked at the drives for sale, I saw that a Seagate Barracuda 2TB at 7200RPM is about the same price as a Western Digital Blue 2TB 5400RPM… Which one should I buy? — www.reddit.com

Many users report in forums that they don’t know how to choose from 5400 RPM and 7200 RPM hard drives. If you are facing this problem, too, please read on to get answers.

About Rotation Speed (RPM)

As we all know, the HDD is mainly composed of parts like platters, read-write heads, a motor spindle, etc. All the platters are mounted on the motor spindle in parallel and each storage surface of platters is equipped with a magnetic head.

The magnetic heads move along the radial direction of the platters, coupled with the high-speed rotation of the platters at several thousand revolutions per minute (RPM), so that the magnetic heads can be positioned at a specified position on the platter for reading and writing data.

Therefore, the rotation speed is that of the motor spindle in the HDDs, which also stands for the maximum number of revolutions that the platters can complete in one minute.

In general, the faster the rotation speed, the faster the hard disk can find files, and the higher the transmission speed of the hard disk. Therefore, the rotation speed largely determines the speed of the hard disk.

Detailed Introduction to Hard Disk – Learn About It Now

5400 RPM vs 7200 RPM

Currently, the speed of disks can be as high as 15,000 RPM. High-speed hard drives like 10,000 RPM hard drives are generally used in servers and the rotation speed of ordinary hard drives for home use is generally 5400 RPM or 7200 RPM. In this part, I will explain 5400 vs 7200 RPM hard drives to you.

7200 RPM Hard Drives’ Advantage

7200 RPM hard drives’ advantage is the high performance. Typically, the more the hard drive RPM, the faster the hard disk. Therefore, 7200 RPM hard drives are usually faster than 5400 RPM hard drives.

For a 7200 RPM hard drive, the time required for each revolution is 60 × 1000 ÷ 7200 = 8.33 milliseconds, and the average rotation latency time is 8.33 ÷ 2 = 4.17 milliseconds. For a 5400 RPM hard drive, its average rotation latency time is 60 × 1000 ÷ 5400 ÷ 2 = 5.56 milliseconds.

In terms of rotation speed, 7200 RPM is at least 15% faster than 5400 RPM hard drives. (Of course, these are just theoretical numbers. The actual hard drive speed is also affected by many other factors.)

In addition, the gap between the 7200 RPM hard drives and the 5400 RPM hard drives is not significant in terms of sequential read and write capabilities. The part that best reflects the performance gap between them is the random read and write capabilities, which affect the read and write speed for fragmented files and program startup speed.

This article explains how to measure disk performance and how to interpret the disk performance test result.

Therefore, if you want to install OS or run programs on HDDs, you should choose 7200 RPM hard drives, which can make your OS or programs run faster.

5400 RPM Hard Drives’ Advantages

5400 RPM hard drives’ advantages are low energy consumption, low heat production, low noise, and longer lifespan.

Higher rotation speed can shorten the average rotation latency time and actual read and write time of the hard disk, but it also brings negative effects such as temperature increase, increased motor spindle wear, increased working noise, etc.

At the same time, if other factors remain unchanged, the increasing rotation speed means that the power consumption of the motor will increase, the more electricity is consumed per unit time, and the working time of the battery will be shortened.

Therefore, from these aspects, 5400 RPM hard drives are superior to 7200 RPM hard drives. If you just use HDDs to back up data , 5400 RPM hard drives are enough capable of that.

Note: Due to heat dissipation and portability requirements, notebooks generally use 5400 RPM hard drives. 7200 RPM hard drives are mostly used on desktops. Of course, if your laptop has good cooling performance, you can also install a 7200 RPM hard drive on it.

Areal Density: Is 7200 RPM HDD Really Faster than 5400 RPM HDD?

When you measure the performance of a hard drive, apart from the RPM, you should also take areal density into consideration. Areal density refers to the density of bits storage on the circular platters.

When areal density increases on a hard drive, the data becomes more compact. The more compact the data, the quicker the head can get from bit to bit to read and write data. Therefore, data throughput performance improves. In this part, I will introduce some areal density technologies to you.

In LMR (Longitudinal Magnetic Recording) mode, the magnetization direction of the medium is parallel to the platter surface and follows the track.

This method has a disadvantage of occupying a relatively large area. In addition, when the magnetic particles are too small and are too close to each other, the magnetism is easily susceptible to thermal energy interference, which causes the magnetic particles disoriented. Therefore, in the era of LMR, the magnetic density was relatively lower.

To solve this problem, PMR (Perpendicular Magnetic Recording) comes out. In PMR, the magnetization direction of the medium is perpendicular to the platter surface, increasing the areal density. In addition, scientists have also used heat assisted magnetic recording technology to improve the ability to write information at high densities.

With the help of PMR, the areal density is increased greatly. This is also why some 5400 RPM hard drives are faster than 7200 RPM hard drives.

PMR HDD is also called as CMR (Conventional Magnetic Recording) HDD. CMR HDD adopts typical PMR technology, making the magnetization direction of the data bit perpendicular to the platters so as to increase the areal density. In CMR (PMR), the write tracks are closely juxtaposed but do not overlap.

The read and write functions of the magnetic head of the HDD are separated. Generally speaking, the write magnetic head is usually larger than the read magnetic head , because the read operation does not require any modification to the magnetic medium while the write magnetic head applies a strong magnetic field to flip the magnetic medium.

In PMR mode, the width of the write head determines the number of tracks on the platters. Therefore, if HDD suppliers want to increase the magnetic recording density, they will reduce the size of the write head to the physical limit as much as possible.

However, due to physical limitations, the track width (and the size of the write head) can only be reduced to a certain extent.

To continuously increase the storage per disk (areal density), SMR  (Shingled Magnetic Recording) comes out, which can be seen as an extension of PMR technology. But unlike CMR (conventional PMR), which does not allow tracks to overlap each other, SMR writes new tracks that overlap part of the previously written magnetic track, leaving the previous track narrower and allowing for higher track density.

The read head can still read data from the uncovered portion of the track. But when randomly write or overwrite data in place, the writing process will be slowed down since writing to one track will overwrite adjacent tracks, and require them to be rewritten as well (because part of the previously written magnetic track is overlapped).

If your hard drive is a SMR HDD, you can use it to archive files, but I advise you not to run the system or program on it, or frequently do other write operations on it.

Is SSD upgrade necessary? How do you upgrade SSD or replace hard drive with SSD? Come to read this post and you will get the answers.

If you want to migrate your computer’s operating system to a 5400 RPM or 7200 RPM hard drive, you can do that by virtue of Migrate OS to SSD/HD feature of MiniTool Partition Wizard. Please refer to the following steps:

Step1: Click the above button to download MiniTool Partition Wizard. Then, launch this tool to get its main interface and then click on Migrate OS to SSD/HDD in the toolbar.

Step2: Choose the right method to migrate the system disk and click Next .

Step 3: Choose a target disk to migrate Windows 10 to and click Next . Then, a warning window will pop up. Read it and click Yes .

Step 4: Choose right copy options and adjust the target disk layout, and then click Next .

Step 5: Read the note and click Finish , then click Apply on the toolbar to execute the pending operations.

Step 6: MiniTool Partition Wizard will ask for a reboot. Click Restart Now . Enter the firmware to configure BIOS setting when finished.

Cloned drive won't boot? This guide shows you how to make cloned drive bootable in Windows 10/8.1/7 using the best hard drive cloning software.

Are 7200 rpm drives faster than 5400? Is more RPM on a hard drive better? You can get answers in this post. I hope it can help you. Click to Tweet

Bottom Line

Has this post answered your doubts about 5400 RPM vs 7200 RPM? If you have other ideas about 5400 vs 7200 RPM, please leave a comment below. If you have difficulty in migrating OS, please contact us via [email protected] or leave your question below. We will reply to you as soon as possible.

5400 RPM vs 7200 RPM FAQ

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User Comments :

Disques durs à 7200 tours/min: ils trouvent tout, tout de suite

Quand on considère les performances globales d'un PC, on prend en compte le processeur, la mémoire ou encore la puissance de la carte graphique. Un autre élément capital, plus encore peut-être en usage quotidien, est souvent oublié : le disque dur, pourtant indispensable pour le chargement de Windows ou le travail sur de gros fichiers. […]

Quand on considère les performances globales d'un PC, on prend en compte le processeur, la mémoire ou encore la puissance de la carte graphique. Un autre élément capital, plus encore peut-être en usage quotidien, est souvent oublié : le disque dur, pourtant indispensable pour le chargement de Windows ou le travail sur de gros fichiers. Quant aux jeux récents et leurs énormes textures, ils tourneront eux aussi plus ou moins rapidement selon qu'on aura adopté tel ou tel disque.

Deux technologies coexistent en matière d'interface entre PC et disques durs. La norme SCSI (prononcez SKEUZI) est plus performante, mais aussi bien plus chère ! Pour en user, il faut disposer d'une carte d'extension et les périphériques à ce format, particulièrement coûteux, alourdissent d'autant la facture du PC. Par exemple, un disque SCSI de 10 Go à 7 200 tours/minute (Ultra 160, offrant un taux de transfert théorique de160 Mo/s) coûte environ 1 400 F, soit le prix d'un disque de caractéristiques quasi égales de 60 Go à la norme IDE. Si la différence de prix est conséquente, la différence en termes de performances, quoique réelle, s'amenuise avec l'arrivée de nouveaux débits en interface E-IDE, qui offrent des taux de transfert théoriques de 66 et 100 Mo/s. Ce qui se révèle très suffisant pour un particuliers et même bon nombre d'entreprises.

Plus intéressant est le taux de transfert. La norme IDE (Integrated Device Equipment), utilisée sur la majorité des PC est à la fois moins performante et bien moins coûteuse que la norme SCSI (Small Computer System Interface). La majorité des machines dispose de 2 ports IDE qui peuvent chacun recevoir 2 disques (disques durs, CD-Rom, DVD, etc.) - soit un maximum de 4 disques.

À l'origine, la norme IDE définissait un taux de transfert - la quantité d'informations que le port IDE peut laisser passer - de 16 Mo par seconde. Les disques étant bien plus lents et la vidéo en temps réel encore un rêve lointain, cela suffisait largement. La norme IDE a peu à peu laissée sa place à la norme IDE améliorée (E-IDE) pour augmenter le débit de transmission. Sont apparus l'Ultra-DMA 33 (qui permet un transfert théorique de 33 Mo/s) puis Ultra-DMA 66 (66 Mo/s), et enfin maintenant Ultra-DMA 100. Cette dernière étape - qui offre un taux de transfert maximal théorique de 100 Mo/s - nécessite pour être pleinement exploitée l'usage d'une nappe spécifique, à 40 trous et 80 connecteurs.

Tout cela, c'est pour la théorie. En pratique, nos tests montrent des débits réels proches de 50 Mo/s. Ainsi, il n'y aura pas de ralentissement pour un film à 24 images/seconde tant que chaque image n'excède pas 2 Mo… À titre de comparaison, un disque de 5 Go à 5 400 tours par minute, à la norme Ultra-DMA 33 (que l'on peut considérer de la précédente génération) donne des résultats de 16 ms de temps d'accès moyens et de 25,4 Mo/s de taux de transfert moyen.

Cette valeur, qui accompagne maintenant tous les disques durs, s'exprime en tours par minute et indique le nombre de tours effectué par la tête de lecture. C'est cette rotation qui définit la quantité maximale de données qui pourront être lues en une seconde. Les disques 7 200 tours sont donc naturellement plus véloces que leurs homologues à 5 400 tours, qui disparaissent petit à petit.

Cela étant, les disques à 7 200 tours/minute ont une fâcheuse tendance à la surchauffe et sont plus bruyants. Pour éviter ce genre de désagréments, certains constructeurs accroissent la densité d'informations sur les disques à 5 400 tours et améliore ainsi les taux de transfert, sans augmenter leur vitesse de rotation. C'est notamment le cas de Seagate et de son disque U-Serie 6 80 Go .

Les vidéos, les fichiers musicaux MP3, et surtout maintenant les jeux prennent de plus en plus de place. Ainsi, Half Life et ses extensions nécessite près de 3 Go et Baldur's Gate II, 4,6 Go, si l'on veut l'installer complètement - ce qui lui donne une célérité certaine. Avec 60 ou 80 Go, plus besoin de désinstaller l'un pour jouer à l'autre - toutes vos applications et vos jeux sont confortablement installés !

Cela a évidemment un coût, mais il est loin d'être prohibitif. Ramené au prix du giga-octet, la solution s'avère très rentable : un disque 20 Go coûte actuellement environ 1 000 F, soit 50 F le Go. Un disque de 80 Go à 2 500 F ramène ce coût à 32 F le Go - soit 36 % de moins ! Mais au-delà de ces considérations, le fait de devoir "faire le ménage" et choisir parmi vos applications lesquelles resteront stockées vous signale l'urgence de changer de disque.

Outre la capacité et la vitesse de rotation, d'autres éléments sont à prendre en compte pour choisir un disque dur. Il n'est plus nécessaire, comme c'était le cas il y a quelques années, de connaître et d'entrer manuellement les nombres de cylindres, de têtes et autres informations absconses.

Toutefois, il faut garder à l'esprit que dès qu'un disque dépasse 30 Go, il ne peut plus être utilisé directement par Windows 9x. Il faut disposer d'un outil de partitionnement adapté, qui doit être fourni par le constructeur. Si le disque est acheté en boîte, ce programme sera généralement fourni sur une disquette ou un CD. Sinon, il faut pouvoir le télécharger facilement.

Certains constructeurs fournissent des logiciels supplémentaires, pour transférer les données depuis un ancien disque, par exemple. En outre, les disques ATA 66 et ATA 100 ne donnent leur mesure qu'avec une nappe adaptée, dite "nappe 80 connecteurs". Elle ressemble à une nappe IDE classique, mais ses extrémités sont colorées (noir, gris et bleu) et se montre indispensable pour dépasser le taux de transfert de la norme ATA 33 (33 Mbits/seconde). Une telle nappe doit être fournie dans la boîte, son prix acquise séparément allant de 50 à 100 F environ.

La taille de l'unité centrale et sa bonne ventilation - ou non - doivent aussi être pris en compte. Les disques 7 200 tours chauffent plus, ce qui nécessite un bon refroidissement. De même, ces disques sont généralement plus bruyants que les ceux à 5 400 tours. Ce peut être utile si vous appréciez de savoir si votre disque tourne "à l'oreille", mais peut être désagréable si vous recherchez un environnement de travail plus calme!

Le choix de la rédaction Western Digital Caviar WD1000BB Avec un temps d'accès moyen de 2 millisecondes, il s'impose comme le disque dur le plus rapide du moment.

Les autres produits testés Seagate Barracuda ATA IV ST380021A Seagate Barracuda ST340824A Samsung SP4004H

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Test : HGST Touro S 1 To, le disque dur externe le plus rapide du moment

Avec ses 7200 tours/min, le Touro S transfère les fichiers plus rapidement que la plupart des autres disques durs externes USB 3.0.

L'avis de 01net.com

HGST Touro S 1 To

Vitesse de lecture

Vitesse d'écriture

Offre logicielle

Dimensions et poids

Appréciation générale

Note de la rédaction

Note publiée le 26/05/2015

Fiche technique

Hgst touro s 1 to : la promesse.

Le constructeur HGST (ex Hitachi) lance un disque dur portable USB 3.0 qui se distingue par sa vitesse de rotation : 7200 tours par minute au lieu de 5400 tours pour les autres modèles. Selon le constructeur, ce modèle est 23% plus rapide. Quelles sont ses performances réelles ?

HGST Touro S 1 To : la réalité

La plupart des disques durs portables possèdent une vitesse de rotation de 5400 tours/min, mais certains constructeurs proposent des modèles à 7200 tours/min pour augmenter les débits. Nous avions beaucoup apprécié le Touro Mobile Pro d’Hitachi mais ce disque est désormais très dur à se procurer. Heureusement, le constructeur rebaptisé HGST lance un nouveau modèle à 7200 tours/min : le Touro S décliné dans des capacités de 500 Go et 1 To. Le gain de vitesse est effectivement notable. Lors du transfert de gros fichiers (ici, des vidéos), nous avons mesuré des débits de 131 Mo/s en lecture et 128 Mo/s en écriture alors qu’un excellent disque portable à 5400 tours/min atteint 110 Mo/s en lecture et 94 Mo/s en écriture. Les 7200 tours/min apportent ici un gain de performances de 19% en lecture et 36% en écriture.

Le Touro S se révèle également très rapide avrec les fichiers de plus petite taille. Ainsi, même si les débits baissent pour les transferts de photos Jpeg, ils restent excellents :  126 Mo/s en lecture et surtout 74 Mo/s en écriture, ce qui est largement au-dessus de la moyenne (environ 40 Mo/s).

Un boîtier agréable a l’œil mais un peu fragile

Le Touro S bénéficie d’un beau boîtier disponible en quatre couleurs (or, argent, gris foncé et rouge) mais il manque un peu de robustesse du fait de sa coque en plastique. On regrette aussi la petite diode d’activité placée à l’arrière qui manque vraiment de visibilité. Seul accessoire fourni : un câble USB d’environ 43 cm.

(Crédit photo : Laurie Gouars)

Le Touro S est livré avec un excellent logiciel de sauvegarde : Touro Cloud Backup. Bien conçu et très agréable d’emploi, ce programme offre un mode de sauvegarde rapide des fichiers courants (documents, musique, vidéo et photo) et un mode personnalisé avec le choix des répertoires à sauvegarder. Il sauvegarde les fichiers de votre ordinateur sur le disque portable, mais aussi sur le Cloud.

Un programme de sauvegarde très bien conçu Lors de la première utilisation, il suffit de créer un compte pour disposer de 3 Go d’espace de stockage en ligne gratuit. Une offre de 250 Go est également disponible, pour environ 60 euros par an. Les fichiers stockés sur le Cloud sont également accessibles avec un simple navigateur Internet en allant sur le site apps.tourocloudbackup.com . Le programme est doté d’options vraiment pratiques : sauvegarde automatique ou tous les jours à une heure précise, exclusion des fichiers supérieurs à une certaine taille et limitation du débit pour ne pas saturer la bande passante Internet. Il est également possible de sauvegarder immédiatement un fichier par simple glisser/déposer de l’explorateur de fichiers vers une zone spécifique dans l’interface du logiciel. Seul bémol : la version Mac OS n’est pas présente sur le disque et il faudra la télécharger sur le site Web de Touro Cloud Backup .

🔴 Pour ne manquer aucune actualité de 01net, suivez-nous sur Google Actualités et WhatsApp .

Le verdict du test

Pour moins de 100 euros, le Touro S est actuellement le plus rapide des modèles de 1 To que nous avons testés. Il est certes possible de monter en vitesse, mais il faut alors casser sa tirelire et passer au SSD portable. Cerise sur le gâteau : il bénéficie d’un excellent programme de sauvegarde. Nous regrettons toutefois que le boîtier ne soit pas un peu plus robuste et l’absence d’un logiciel de chiffrement pour les données sensibles.

HGST Touro S 1 To...

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The Storage Guide

Rotation speed.

• Page 1: Overview
• Page 2: Rotation Speed
• Page 3: Vertical Mapping
• Page 4: The Interface (EIDE / SCSI)
• Page 5: The File System
• Page 6: The Bus Master DMA Feature Of The Triton

Typical harddisks have a rotation speed from 4,500 to 7,200 rpm, a 10,000 rpm drive just hit the market. The faster the rotation, the higher the transfer rate, but also the louder and hotter the HD. You may need to cool a 7200 rpm disk with an extra fan, or its life would be much shorter. Modern HD's read all sectors of a track in one turn (Interleave 1:1). The rotation speed is constant.

Number Of Sectors Per Track

Modern harddisks use different track sizes. The outer parts of a disk have more space for sectors than the inner parts. Usually, HD's begin to write from the outside to the inside of a disk. Hence, data written or read at the beginning of a HD is accessed and transferred faster rate.

Seek Time / Head Switch Time / Cylinder Switch Time

The fastest seek time occurs when moving from one track directly to the next. The slowest seek time is the so called full-stroke between the outer and inner tracks. Some harddisks (especially SCSI drives) don't execute the seek command correctly. These drives position the head somewhere close to the desired track or leave the head where it was. The seek time everyone is interested in is the average seek time, defined as the time it takes to position the drive's heads for a randomly located request. Yes, you are correct: seek time should be smaller if the disk is smaller (5.25", 3.5" etc.).

All heads of a harddisk are carried on one actuator arm, so all heads are on the same cylinder. Head switch time measures the average time the drive takes to switch between two of the heads when reading or writing data.

Cylinder switch time is the average time it takes to move the heads to the next track when reading or writing data.

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All these times are measured in milliseconds (ms).

Rotational Latency

After the head is positioned over the desired track, it has to wait for the right sector. This time is called rotational latency and is measured in ms. The faster the drives spins, the shorter the rotational latency time. The average time is the time the disk needs to turn half way around, usually about 4ms (7200rpm) to 6ms (5400rpm).

Data Access Time

Data access time is the combination of seek time, head switch time and rotational latency and is measured in ms.

As you now know, the seek time only tells you about how fast the head is positioned over a wanted cylinder. Until data is read or written you will have to add the head switch time for finding the track and also the rotational latency time for finding the wanted sector.

I guess you already know about cache. All modern HD's have their own cache varying in size and organization. The cache is normally used for writing and reading. On SCSI HD's you may have to enable write caching, because often it is disabled by default. This varies from drive to drive. You will have to check the cache status with a program like ASPIID from Seagate.

You may be surprized that it is not the cache size that is important, but the organization of the cache itself (write / read cache or look ahead cache).

With most EIDE drives, the cache memory of the harddisk is also used for storing the HD's firmware (e.g. software or "BIOS"). When the drive powers up, it reads the firmware from special sectors. By doing this, manufacturers save money by eliminating the need for ROM chips, but also give you the ability to easily update your drives "BIOS" if it is necessary (Like for the WD drives which had problems with some motherboard BIOS' resulting in head crashes!).

Organization Of The Data On The Disks

You now know, a harddisk has cylinders, heads and sectors. If you look in your BIOS you will find these 3 values listed for each harddisk in your computer. You learned that a harddisk don't have a fixed sector size as they had in earlier days.

Today, these values are only used for compatibility with DOS, as they have nothing to do with the physical geometry of the drive. The harddisk calculates these values into a logical block address (LBA) and then this LBA value is converted into the real cylinder, head and sector values. Modern BIOS' are able to use LBA, so limitations like the 504 MB barrier are now gone.

Cylinder, heads and sectors are still used in DOS environments. SCSI drives have always used LBA to access data on the harddisk. Modern operating systems access data via LBA directly without using the BIOS.

Transfer Rates / Mappings

In the pictures you can see the several ways how data can be stored physically on the harddisk. With a benchmark program that calculates the transfer rate or seek time of the whole harddisk you can see if your drive is using a 'vertical' or a 'horizontal' mapping. Depending on what kind of read/write heads and servo-motors (for positioning the actuator arm) are used it is faster to switch heads or to change tracks.

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Revolutions per minute Conversion

Revolutions per minute.

Revolutions per minute (abbreviated rpm , RPM , rev/min , r/min ) is a measure of the frequency of rotation, specifically the number of rotations around a fixed axis in one minute. It is used as a measure of rotational speed of a mechanical component. In the French language, tr/min (tours par minute) is the common abbreviation. The German language uses the abbreviation U/min or u/min (Umdrehungen pro Minute).

Quick Find Conversion

Conversion table.

• Revolutions per minute to Radians per second
• Revolutions per minute to 1 per minute
• Revolutions per minute to Centihertzs
• Revolutions per minute to 1 per day
• Revolutions per minute to Petahertzs
• Revolutions per minute to Femtohertzs
• Revolutions per minute to Gigahertzs
• Revolutions per minute to Yottahertzs

Popular conversions

• Cycle per minute to Hertzs
• Revolutions per minute to Hertzs
• Cycle per minute to Revolutions per minute
• 1 per minute to Hertzs
• Hertzs to Cycle per minute
• Millihertzs to Hertzs
• Hertzs to Revolutions per minute
• Kilohertzs to Cycles per second

Unit System

Si conversion table.

• Revolutions per minute RPM

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How to Calculate RPM

Last Updated: February 6, 2023 Fact Checked

This article was co-authored by Kevin Wang . Kevin Wang is a Math Tutor based in New York, New York. Kevin has been tutoring math for over 10 years, and specializes in K-12 math topics and standardized tests, such as SAT and ACT. Kevin has an economics background and a career in both finance and marketing analytics. His interest in tutoring goes back even longer than his career. He discovered tutoring at the start of his university career and enjoys it as a way to stay sharp with fundamental skills and remain up to date with trends in our education system. Kevin received a BS in Economics from Duke University. There are 9 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 130,246 times.

Revolutions per minute, or RPM, are a measure of how fast a rotating object turns. Knowing how fast an object turns is important in determining wind speed, gear ratios, how powerful a motor is, and how well bullets fly and penetrate. There are a number of ways to calculate RPM, depending on what the value is needed for; we’ll stick with some of the simplest.

Calculating RPM By Direct Observation

• You can mark the arm or blade in some way, such as by tying a colored thread or applying a dab of paint to the surface.

• Instead of stopping the count at 1 minute, you may want to count for 2 or 3 minutes and then divide the count by the number of minutes to get the RPM if the object rotates slowly. This will help you avoid estimating a partial rotation if the object does not return to its original position at the end of 1 minute.
• If the object rotates quickly, you may instead want to count for only 15 seconds and then multiply the result by 4 to get the RPM. [3] X Research source
• You can relate the RPM of an object turned by wind to the actual wind speed by first finding the circumference traveled by one of the object’s arms in one rotation. You then convert this distance to either miles or kilometers and multiply that by the RPM to determine how much distance the object rotated through in 1 minute. Multiply this by 60 to determine how much distance was traveled in 1 hour, and you’ll have the wind speed [4] X Trustworthy Source Science Buddies Expert-sourced database of science projects, explanations, and educational material Go to source

Finding RPM Gear Ratios

• For the purposes of this example, we’ll treat the driver gear as having 80 teeth and a rotation rate of 100 rpm.

• For this example, we’ll assume two different driven gear sizes, one that’s smaller than the driver gear, and one that’s larger than the driver gear.
• The smaller driven gear will have fewer teeth than the driver gear. Our smaller gear will have 20 teeth.
• The larger driven gear will have more teeth than the driver gear. Our larger gear will have 160 teeth.

• For our driven gear that has 20 teeth, we’ll divide the number of teeth the driver gear has, 80, by 20 to get 80 / 20 = 4.
• For our driven gear that has 160 teeth, we’ll divide that number by the number of teeth the driver gear has, 80, to get 160 / 80 = 2.

• If the driven gear is smaller than the driver gear, we multiply the result of the ratio between the driver and driven gear by the RPM of the driver gear. For our smaller driven gear with 20 teeth, we multiply the RPM of the driver gear, 100, by the result of 4 from the previous step to get 100 x 4 = 400RPM for the driven gear.
• If the driven gear is larger than the driver gear, we divide the result of the ratio between the driven and driver gear into the RPM, of the driver gear. For our lager driven gear with 160 teeth, we divide the RPM of the driver gear, 100, by the result of 2 from the previous step to get 100 / 2 = 50RPM for the driven gear.

Calculating the RPM of a Moving Bullet

• For this example, we’ll assume a muzzle velocity of 2000 feet per second (609.6 m/s).

• For our purposes, we’ll assume a twist rate of 1:10 inches (1:254 mm).
• The smaller the twist rate, the more spin will be imparted to the bullet by the rifling inside the gun barrel. Too much spin can lead to bullets blowing up or actually impairing accuracy for short-range shooting.

• If the twist rate is given as 1 per a length in inches and the muzzle velocity is given in feet per second, you multiply the muzzle velocity by 12 to convert it to inches per second.
• For our example muzzle velocity of 2000 feet per second, multiplying by 12 gives 2000 x 12 = 24,000 inches per second.
• If the twist rate is given as 1 per a length in millimeters and the muzzle velocity is given in meters per second (m/s), you multiply the muzzle velocity by 1000 to convert it to millimeters per second (mm/s).
• For the metric measure of 609.6 m/s, multiplying by 1000 gives 609.6 x 1000 = 609,600 mm/s.

• Dividing the muzzle velocity of 24,000 inches per second by the length of 10 inches gives 24,000 / 10 = 2400 rotations per second.
• Dividing the muzzle velocity of 609,600 mm/s by the length of 254 mm gives 609,600 / 254 = 2400 rotations per second. (As expected, the results are the same whether using feet and inches or their equivalent measures in metric units.)

• Multiplying 2400 rotations per second times 60 gives 2400 x 60 = 144,000RPM.

Expert Q&A

• You may see revolutions per minute abbreviated different ways according to its usage. Some engineering standards organization prefer the abbreviation “r/min” to be more consistent with other distance/time pairings. You may find versions of this in other languages as well, such as the French “tr/mn” for “tours par minute” or the German “U/min” for “Umdrehungen por Minute.” [13] X Research source Thanks Helpful 1 Not Helpful 0

• Note that the direct observation and bullet RPM calculation methods do not take friction into account. [14] X Trustworthy Source Science Buddies Expert-sourced database of science projects, explanations, and educational material Go to source [15] X Research source Thanks Helpful 0 Not Helpful 0

Things You’ll Need

• Anemometer, wind turbine, or fan (for direct observation)
• Timer (for direct observation)
• Paint or colored thread (for direct observation, to mark the observed arm or blade)

You Might Also Like

• ↑ https://sciencing.com/units-anemometer-measure-8146408.html
• ↑ http://www.scientificamerican.com/article/bring-science-home-wind-speed/
• ↑ http://www.sciencebuddies.org/science-fair-projects/Classroom_Activity_Teacher_WindMeters.shtml
• ↑ https://sciencing.com/calculate-gear-ratio-6495601.html
• ↑ https://www.omnicalculator.com/physics/gear-ratio-rpm
• ↑ https://sciencing.com/calculate-muzzle-velocity-7669736.html
• ↑ https://www.omnicalculator.com/physics/twist-rate
• ↑ https://en.wikipedia.org/wiki/Revolutions_per_minute

About This Article

To calculate RPM by direct observation, start by picking a place to watch on the rotating object, like the tip of a blade on a wind turbine. Then, mark the place on the blade with a marker or dab of paint so it's easier to keep track of. Next, use a timer to count the number of rotations your marked blade makes. After 1 minute has passed, you should know how many revolutions per minute your object makes! To learn how to determine the RPM of driver gears, keep reading! Did this summary help you? Yes No

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Test HDD Western Digital Red 10 To : construit pour durer

Spécifications techniques

• Format : 3,5 pouces
• Interface : SATA 6 Gb/s
• Vitesse de rotation : 5400 tours par minute
• Capacité : 10 To
• Taille du cache : 256 Mo
• Endurance en écriture : 180 To par an
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• Dimensions : 26 x 147 x 101 mm
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Passionné depuis l’adolescence par l’informatique, le montage de PC est devenu un passe-temps. Je jongle entre Windows et Mac tel un funambule. Mon addiction pour les nouvelles technologies m’amène à devenir acteur d’un univers High-Tech rempli de découvertes au quotidien. Mais n’oublions pas ma seconde passion : la photographie !

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