Futuremark PCMark 7
The popular PCMark 7 contains an individual disk subsystem benchmark. It is not a synthetic test, but is based on real-life applications. This benchmark reproduces typical disk usage scenarios and measures how fast they are completed in popular applications. Moreover, the disk access commands are not executed as a steady uninterrupted flow, but in a more realistic manner – with certain pauses caused by the need to process the data. The benchmark generates an overall disk subsystem performance rating as well as speed readings in MB/s in individual usage scenarios. Note that the absolute speed in these scenarios is not too high because of the above mentioned pauses between individual input/output operations. In other words, PCMark 7 shows you the speed of the disk subsystem from the application’s point of view. Numbers like that show us not only the pure performance of an SSD, but mostly how big of a performance gain a certain SSD can guarantee in real life.
We ran PCMark 7 on “steady” SSDs, which is what they are going to be in actual computer systems most of the time. Their performance in this case is affected not only by their controller or flash memory speed but also by the efficiency of their internal algorithms that fight performance degradation.
Futuremark PCMark 7 suggests that the Force GS is quite a good SSD, placing it third in the SandForce hierarchy behind the exceptional Intel SSD 520 and the Mushkin Chronos Deluxe which employs the SF-2281 controller together with older 32 nm Toggle NAND flash.
Now let’s check out the individual tests to get a more detailed picture of what our SSDs are capable of under various types of operational load:
SandForce-based SSDs have always performed well in PCMark 7, and the Corsair Force GS carries this tradition on. Judging by its high place in the standings, it seems to be among the best midrange offers available. By the way, it differs from the SanDisk Extreme SSD which is slow due to its suboptimal TRIM implementation.