TEST: Lexar NM620 256GB M.2 SSD

Technical data
Image
Manufacturer	Lexar
Model number	LNM620X256G-RNNN
Storage capacity	256 GB (238 GiB)
Read speed	3000 MB/s
Write speed	1300 MB/s
Interface	PCIe 3.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	no
TBW (Total Bytes Written)	125 Terabyte
Controller	InnoGrit IG5216
Price	ca. 27 AUD (= 0,11 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

93 %

Write speed

69 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed with a 5 GB file. A total score of 2265 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	2882,39 MB/s	1735,15 MB/s
4K in megabytes per second	72,47 MB/s	150,01 MB/s
4K-64Thrd in megabytes per second	518,20 MB/s	644,15 MB/s
Access time in milliseconds	0,118 ms	0,789 ms
Score	879	968
Total score	2265

Copy Performance Test

A common everyday situation is simulated here. Three test folders are created:

• ISO (folder with two large files)
• Program (folder with many small files)
• Game (folder with small and large files)

The three folders are copied using the Windows Copy command (the cache remains enabled). The practical test of February 14, 2022 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD Copy-Benchmark	Transfer rate:	Duration:
ISO two large files	1377,69 MB/s	1,67 s
Program many small files	933,65 MB/s	7,54 s
Game small and large files	1508,10 MB/s	4,58 s

Compression Performance Test

Here, the writing and reading speed of the the Lexar SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 3000MB/s and 1300MB/s respectively).

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CDM	Read [MB/s]	Write [MB/s]
SEQ1M Q8T1	3381,31	1871,62
SEQ1M Q1T1	2480,70	1877,38
RND4K Q32T16	551,51	781,01
RND4K Q1T1	76,85	163,70