WD Blue SN550 1TB NVMe SDD Review


ATTO & CrystalDiskMark

ATTO v4.00.0f2

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 Disk Benchmark:

ATTO Disk Benchmark WD SN550 1TB

Benchmark Results: On ATTO Disk Benchmark we see that the WD Blue SN550 1TB drive crushed it by reached speeds of up to 2.31 GB/s read and 1.84 GB/s write at a Queue Depth of 4.

CrystalDiskMark 7.0.0 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) and shows the highest score of five runs.


CrystalDiskMark WD SN550 1TB

CrystalDiskMark WD SN550 1TB

Benchmark Results: The WD Blue SN550 1TB drive maxed out at 2457 MB/s read and 2023 MB/s write in the standard sequential write test that is done at Q8T1. Random 4K performance topped out at 409,000 IOPS read and 310,000 IOPS write. This drive is rated at 410,000 IOPS read and 405,000 IOPS write, so we are off just a bit on the 4K random write numbers.

Let’s look at some other benchmarks!