Futuremark PCMark 7
The famous PCMark 7 includes a dedicated disk subsystem test which is based on real-life applications. The test reproduces disk usage scenarios in popular tasks and measures how fast they are executed. Starting from version 1.4.0, the PCMark 7 disk subsystem test issues raw performance results which do not count in any pauses in the request queue. New results are thus incompatible with old ones, but the differences between SSDs become more obvious. That’s why we use the new version of the test.
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’s programmers seem to be very fond of SandForce-based SSDs. Using compressible data in the test traces, they help the SF-2281 controller get the highest performance rating. So it wouldn’t be correct to compare SandForce-based SSDs with others using PCMark 7, yet we can compare SSDs within each group. And the Kingston SSDNow V300 doesn’t look good in this comparison. It is slower than the other SandForce-based solutions, making us suspect some limitations in its firmware that show up in real-life applications. After all, the SSDNow V300 is an entry-level product and is expected to be slower than other solutions with the SF-2281 controller.
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:
The same goes for the individual PCMark 7 tests. The Kingston SSDNow V300 should only be compared with the Intel SSD 520, Corsair Force GT and Corsair Force GS. And it turns out to be slower than all of them. In fact, it can only match the other SF-2281 based solutions at sequential reading/writing, i.e. when processing multimedia files. When it comes to random-address access, the Kingston SSDNow V300 is worse than the other SSDs with the same controller.