CrystalDiskMark 3.0 Tests

CrystalDiskMark 3.0 is a file transfer and operational bandwidth benchmark tool from Crystal Dew World that offers performance transfer speed results using sequential, 512KB random, and 4KB random samples. For our test results chart below, the 4KB 32-Queue Depth read and write performance was measured using a 1000MB space. CrystalDiskMark requires that an active partition be set on the drive being tested, and all drives are formatted with NTFS on the Intel P67 chipset configured to AHCI-mode. Benchmark Reviews uses CrystalDiskMark to illustrate operational IOPS performance with multiple threads. In addition to our other tests, this benchmark allows us to determine operational bandwidth under heavy load.

Each of our tests with the OCZ Vertex 3 SSD were consistent, and the best results obtained were used in the chart below. Sequential tests on this Sandforce SF-2200 SSD produced a maximum read speed of 500.6 MB/s, while the write speed was 300.5 MB/s. The sequential file transfer speeds have traditionally been low with this benchmark tool for SandForce controllers because of data compression, so we will concentrate on the operational IOPS performance for this section.

CrystalDiskMark 3.0 reported 512K results of 440.0 MB/s read and 295.6 MB/s write performance. 4K tests produced 33.33 read and 80.11 write performance. 4KB queue depth 32 IOPS is one area where SandForce-based SSDs truly excel, and the 240GB OCZ Vertex 3 offers the most impressive performance we've ever seen from any SATA-connected solid state drive.

Displayed in the chart below, the maximum 4KB queue depth 32 IOPS performance results for several enthusiast-level storage products illustrate which products offer the best operation under load:

In the next section, we continue our testing using Iometer to measure input/output performance...

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