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Product survey: 5 SATA 500 GB HDD
by Marc Prieur
Published on August 22, 2007

Synthetic performances

Here are the rates obtained in the «Core Test» of h2bench which allows measuring cache speed. You may recall that the cache is 16 MB on all of the five products tested. Only Western is a little behind with less than 150 MB /s, the rate of an SATA 1.5 Gbits /s interface, while we are in SATA 3 Gbits /s with a theoretical maximum of 300 MB /s. Either way this max is far from being reached.

This graph represents the rate in KB /s depending on the advancement on the hard drive expressed in GB /s (X axis). The evolution since the E7K500 and its 100 GB platters is obvious and the Caviar SE16 dominates followed by the Samsung T166. You may have noticed that the rate at the beginning of the platter isn’t standard which leads us to believe that there is a lower quality of media on the part of the drive tested. The Hitachi and Seagate share the back of the pack with drives from the last generation, the Hitachi being faster at the beginning and the Seagate finishing stronger.

Here the maximum, minimum and average are given of the same data.

We finish this section with access time measurements still carried out in h2bench. This was done first without noise control and then with it activated. Unfortunately, there hasn’t been any improvement in this area and all hard drives are in the 1.2ms range. We point out the very significant impact of AAM for Western and Hitachi. On the other hand, with Samsung the loss is small, but this should be taken into account with the sound measurements provided on page 8. As usual, Seagate doesn’t offer this option.

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