Toshiba OCZ RD400 M.2 PCIe NVMe SSD Review – 512GB

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ATTO & CrystalDiskMark

ATTO v3.05

ATTO is one of the oldest drive benchmarks still being used today and is still very relevant in the SSD world. ATTO measures transfers across a specific volume length. It measures raw transfer rates for both reads and writes and places the data into graphs that can be very easily interpreted. The test was run with the default runs of 0.5KB through 64MB transfer sizes with the total length being 256MB.

ATTO – Toshiba OCZ RD400 512 GB:


Benchmark Results: ATTO showed the Toshiba OCZ RD400 512GB SSD maxing out at 2711 MB/s read and 1635 MB/s write in the standard overlapped I/O benchmark. 


CrystalDiskMark 5.1.2 x64

CrystalDiskMark is a small benchmark utility for drives and enables rapid measurement of sequential and random read/write speeds. Note that CDM only supports Native Command Queuing (NCQ) with a queue depth of 32 (as noted) for the last listed benchmark score. This can skew some results in favor of controllers that also do not support NCQ.

CystalDiskmark – Toshiba OCZ RD400 512GB:


Benchmark Results: The Toshiba OCZ RD300 512GB drive reached 1848 MB/s read and 1540 MB/s write in the standard sequential write test. The Random 4K performance on the drive was 49 MB/s read and 225 MB/s write. When we ran the test again set to 0Fill mode we found that the read scores were pretty close to the same. At a larger queue depth of 32, the Toshiba OCZ RD400 SSD had an impressive sequential read result of over 2600 MB/s and nearly 1550 MB/s write.  

Let’s look at some other benchmarks!

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