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.
The Silicon Power Velox V60 and the Transcend SSD720 are in the leading group here, the Velox V60 beating the OCZ Vertex 4 and almost catching up with the Intel SSD 330 which takes first place thanks to its exclusive firmware.
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:
Where the SSDs differ in performance more, the Silicon Power Velox V60 and Transcend SSD720 are almost always faster than the Corsair Force GT but slower than the Intel SSD 330. They are also similar to each other because they use the same hardware components: SF-2281 controller with 24nm flash from SanDisk. The slightly different capacity and different firmware versions do not interfere with their performance.