Compressible Data Test
As you will have gathered from the previous page, we measured the performance of each drive using two different programs: CrystalDiskMark and Iometer.
It is important to note that we connected the SSDs to a SATA-600 port on our motherboard rather than a SATA-300 port, which could cause performance limitations.
We set CrystalDiskMark to “All 0x00 Fill mode” to evaluate the performance of the SSD when dealing with compressible data.
In the sequential read test, the SM2280S3 was 11% faster than the SSDNow V300, but in the sequential write test, both units presented the same performance level.
In both read and write tests using 512 kiB blocks, the SM2280S3 showed similar performance level as the SSDNow V300 120 GiB.
In the random read test using 4 kiB blocks, the SM2280S3/120G was 232% faster than the SSDNow V300, probably due to the DDR3 cache. But in the random write test with 4 kiB blocks, the SM2280S3 was 11% slower than the V300.