TEST: Lexar Professional NM700 256GB M.2 SSD

Technical data
Image
Manufacturer	Lexar
Model number	LNM700-256RB
Storage capacity	256 GB (238 GiB)
Read speed	3500 MB/s
Write speed	1200 MB/s
Interface	PCIe 3.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	✓ yes
TBW (Total Bytes Written)	150 Terabyte
Controller	Marvell 88SS1092
Price	ca. 37 AUD (= 0,14 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

92 %

Write speed

45 %

*) 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 2975 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	3030,12 MB/s	1157,17 MB/s
4K in megabytes per second	56,86 MB/s	152,98 MB/s
4K-64Thrd in megabytes per second	784,98 MB/s	1054,11 MB/s
Access time in milliseconds	0,065 ms	0,120 ms
Score	1145	1323
Total score	2975

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 March 23, 2021 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	1367,87 MB/s	1,68 s
Program many small files	753,93 MB/s	9,34 s
Game small and large files	1185,47 MB/s	5,83 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 3500MB/s and 1200MB/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	3339,34	1224,14
SEQ1M Q1T1	2622,89	1219,92
RND4K Q32T16	847,20	1095,29
RND4K Q1T1	60,66	166,80