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OCZ Core Series 64GB SSD Review

Posted on Thursday, August 21st, 2008 at 8:58 am (0) comments


ATTO is perhaps the best disk benchmarking tool to date with a vast selection of predefined block sizes available to choose from. Here, we tested the drives using a total length of 256MB in block sizes of 0.5KB to 8MB. ATTO shows how the drives read / write files with a 256MB sequence of 0.5KB files to a 256MB sequence of 8MB files. This way, we can see how each drive performs with both small and large files.

f1_atto_256mb ocz_atto_256mb

Left: Samsung Spinpoint F1
Right: OCZ Core Series SSD

As is apparent from the screenshots, both the Spinpoint F1 and the SSD perform quite poorly reading and writing very small files. What is most stunning is the fact that the SSD struggles considerably more in this area than conventional hard drives as the F1. In fact, it is only around block sizes of 128K where its dominance really starts to show; this is in contrast to the F1 which starts to hit its peak at only 16K block sizes.

Also noteworthy is the SSD’s very poor write performance. The peak write rate of the SSD is only around 85 MB/s, whereas the F1′s peak is around 90 MB/s (with noticeably higher and more consistent average write rates than the SSD). This is a major disappointment as faster hard drives such as the 10000 RPM WD Velociraptor would absolutely humiliate the SSD in this department. Nonetheless, the SSD makes up for its weak write performance with rock solid read rates, writing larger files at an astonishing 130 MB/s clip. This is in contrast to the F1, which maxes out its reads at only 87 MB/s.


CrystalDiskMark is another disk benchmarking tool similar to ATTO in that there are various test sizes to select from. We chose a test size of 100MB to really demonstrate the maximum sequential read / write rates that these drives can achieve.

f1_crystaldiskmark ocz_crystaldiskmark

Left: Samsung Spinpoint F1
Right: OCZ Core Series SSD

The SSD does extremely well with these large files, achieving a 136 MB/s read and 83 MB/s write, matching manufacturer specifications. The F1 is not too shabby either, achieving an 87 MB/s read and surpassing the SSD with an 87 MB/s write. We also see how poorly the SSD performs with random 512KB and 4KB writes, as we saw with the ATTO results.

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