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Intel IOMeter Tests

Now we will use the latest available version (1.1.0 RC1) of the synthetic benchmark IOMeter, an industry standard in testing disk subsystems. IOMeter is very functional but we will focus on the SSD-relevant characteristics only: random-address reading/writing and sequential reading/writing.

The first test is about reading and writing random-address 4KB data blocks. The request queue depth is limited to 1, but there are four independent data threads: one for each CPU core. This disk usage scenario is closer to real-life applications in a multitasking environment. The test data are pseudorandom.

The second IOMeter test is the same except that the request queue is increased to 32 commands, which means a much higher load on the disk subsystem.

The tests with random-address data suggest that Corsair's SSDs are practically similar to modern SandForce-based products from other brands. And like the SSDs from Kingston and OCZ, they are inferior to the Marvell-based Crucial. The fundamental difference of IOMeter from CrystalDiskMark we’ve used above is that the IOMeter tests are multithreaded. Crucial's architecture seems to be better suited for it.

In the final test the SSDs are accessed for sequentially placed data in 128KB blocks. The test runs in a single thread at a request queue of 1. Like in the previous tests, the test data are pseudorandom.

The speeds of sequential reading are almost identical but the Force GT goes ahead at sequential writing, joining the group of faster SSDs. The Force 3 is slower and similar to the OCZ Agility 3 in performance. Considering its lower pricing, the Force 3 can be said to deliver a more attractive price/performance ratio.

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