Lexar NM620 1TB NVMe SSD Review

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ATTO & CrystalDiskMark

ATTO v4.01.0f1

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:

Benchmark Results: On ATTO Disk Benchmark the Lexar NM620 1TB model is hit speeds of up 3.0 GB/s read and 2.79 GB/s write as our primary boot drive filled to 55% capacity. 

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.

CystalDiskMark:

Peak Performance Preset

Real Performance Preset

Benchmark Results: The Lexar NM620 1TB NVMe SSD finished this benchmark at 3356.35 MB/s read and 2926.95 MB/s write on CrystalDiskMark 7! The Random 4K performance at QD1 was 67.58 MB/s read and 186.18 MB/s write. The official speed ratings on CrystalDiskmark are up to 3300 MB/s read and 3000 MB/s write, so we are very close to the drives rated speeds.

Let’s look at some other benchmarks!

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