OCZ RD400 NVMe SSD Review (256GB/512GB/1TB)

CRYSTAL DISK BENCHMARK VER. 4.0.3 X64

Crystal Disk Benchmark is used to measure read and write performance through sampling of random data which is, for the most part, incompressible. Performance is virtually identical, regardless of data sample so we have included only that using random data samples.

256GB

  512GB

1TB

Crystal Disk Mark also shows similar results to that of ATTO. Reads all reach around 2.6GB/s read and write speed for the 256GB model is over 1.1GB/s while the larger capacities both have over 1.6GB/s write speed. 4K performance is very good with read speeds of about 50MB/s and write speeds around 250MB/s.

AS SSD BENCHMARK VER 1.8

The toughest benchmark available for solid state drives is AS SSD as it relies solely on incompressible data samples when testing performance. For the most part, AS SSD tests can be considered the ‘worst case scenario’ in obtaining data transfer speeds and many enthusiasts like AS SSD for their needs. Transfer speeds are displayed on the left with IOPS results on the right.

256GB

512GB

1TB

In AS SSD the OCZ RD400s reached overall scores of 2536, 2623, and 2584 points respectively. As normal sequential read and write speeds are a slightly slower than in the other benchmarks with reads coming in at around 2GB/s for the larger capacities, though the 256GB model seems to take the lead here reading at over 2.1GB/s. Writes are also lower in this benchmark with speeds ranging from 900-950MB/s.

AS SSD also gives us a look at IOPS performance. For high QD random reads it was able to deliver performance that exceeds spec. The 256GB model hit 208K IOPS while the 512GB and 1TB models reached over 215K IOPS read. In terms of write, all delivered over 170K IOPS with ease. All copy benchmark results were good with results all under 2 seconds. Again, these speeds are much faster than SATA SSDs.

ANVIL STORAGE UTILITIES PROFESSIONAL

Anvil’s Storage Utilities (ASU) are the most complete test bed available for the solid state drive today. The benchmark displays test results for, not only throughput but also, IOPS and Disk Access Times. Not only does it have a preset SSD benchmark, but also, it has included such things as endurance testing and threaded I/O read, write and mixed tests, all of which are very simple to understand and use in our benchmark testing.

256GB

512GB

1TB

Finally, similar to that of the other test results, we see very good performance yet again. Overall, the OCZ RD400s reached 10915, 11447, and 11018 points respectively. Sequential performance is around 2GB/s for reads for all capacities and 1GB/s write for the 256GB model and about 1.3GB/s writes for the larger capacities. 4K performance hasn’t varied much from the other tests either.