TEST: Lexar NM620 256GB M.2 SSDNM620

Here you can find a detailed performance and benchmark test.
The the M.2 NVMe SSD NM620 with 256GB (LNM620X256G-RNNN) from Lexar was tested.


Technical data
Manufacturer Lexar
Type LNM620X256G-RNNN
Storage capacity 256 GB (238 GiB)
Read speed 3000 MB/s
Write speed 1300 MB/s
Interface PCIe 3.0 x4
Form factor M.2 2280
Memory module (NAND) TLC
DRAM Cache no
TBW (Total Bytes Written) 125 Terabyte
Controller InnoGrit IG5216
Price 28 USD (= 0,11 $ / GB)
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Score
2265
Price/GB
0,11 $
Compared to the top performer*
Read speed
55 %
Write speed
68 %

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

AS SSD Benchmark 2.0

Standard performance test

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

AS SSD TEST: Lexar NM620 256GB

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 Windows Copy command (the cache remains enabled). The practical test of 14.02.2022 shows the performance for simultaneous write and read operations. The lower the duration, the better.

AS SSD TEST: Lexar NM620 256GB
AS SSD Kopier-Benchmark Transferrate: Dauer:
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 write as well as read speed (according to the manufacturer 3000 MB/s and 1300 MB/s) the Lexar SSD is measured depending on the compressibility of the data.

AS SSD TEST: Lexar NM620 256GB

CrystalDiskMark 7.0 Benchmark


Similar to AS SSD, two sequential and two random performance tests are performed.

CrystalDiskMark Benchmark TEST: Lexar NM620 256GB
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

Input/Output operations per second

CDM Read [IPOS] Write [IPOS]
SEQ1M
Q8T1
3.224,70
1.784,90
SEQ1M
Q1T1
2.365,80
1.790,40
RND4K
Q32T16
134.645,00
190.677,00
RND4K
Q1T1
18.763,20
39.966,10

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
2.478,80
4.474,16
SEQ1M
Q1T1
422,45
558,17
RND4K
Q32T16
3.798,96
2.667,37
RND4K
Q1T1
53,19
24,90

ATTO Disk Benchmark 4

Here a 256 MB file is written several times to the Lexar M.2 SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they can usually be written and read.

ATTO Disk Benchmark TEST: Lexar NM620 256GB

HD Tune Pro 5.75 Benchmark

HD Tune writes a 5 GB file to the Lexar M.2 SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The determined access time and burst rate are also displayed.

HD Tune TEST: Lexar NM620 256GB

HD Tune Endurance test

A long-term test was performed here to fully utilize the memory. You can see when a cache is full and the write performance decreases.

HD Tune Dauertest TEST: Lexar NM620 256GB

SSD-Z 16 Benchmark

Similar to HD Tune, a 500 MB file is written to the Lexar M.2 SSD here. is written. The transfer data is displayed. The more constant the line, the better.

SSD-Z TEST: Lexar NM620 256GB

Information about the test system can be found at the bottom of the home page.