TEST: Lexar NQ790 1TB M.2 SSD

Technical data
Image
Manufacturer	Lexar
Model number	LNQ790X001T-RNNNG
Storage capacity	1024 GB (932 GiB)
pSLC-Cache	224 GB approx.
Read speed	7000 MB/s
Write speed	6000 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	QLC
DRAM Cache	no
TBW (Total Bytes Written)	600 Terabyte
Controller	Maxio MAP1602
Price	ca. 83 USD (= 0,08 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

97 %

Write speed

87 %

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

This SSD is PS5 compatible. It can be used as expansion storage in a PlayStation 5 console.

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 7169 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	6037,45 MB/s	5608,42 MB/s
4K in megabytes per second	68,92 MB/s	182,66 MB/s
4K-64Thrd in megabytes per second	2381,56 MB/s	1830,88 MB/s
Access time in milliseconds	0,022 ms	0,332 ms
Score	3054	2574
Total score	7169

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 July 18, 2024 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	2171,97 MB/s	1,06 s
Program many small files	1125,46 MB/s	6,25 s
Game small and large files	1950,90 MB/s	3,54 s

Compression Performance Test

This measures the write and read speed of the the Lexar SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 7000MB/s and 6000MB/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	7225,91	5994,10
SEQ1M Q1T1	5060,08	5274,25
RND4K Q32T16	3931,75	1728,93
RND4K Q1T1	78,35	197,71

HD Tune Pro Endurance test

This is a long term test to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 300 GB was written to the medium. After approx. 224 GB, the pSLC-Cache was full and the performance was throttled.
At least the test file could be read with an average write speed of 3846 MB/s and written with 378 MB/s.

HD Tune Pro 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.

ATTO Disk Benchmark

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 be written and read.

SSD-Z 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. Unfortunately the tool does not work correctly above about 5,000 MB/s and no line (and sometimes wrong min and max data) is displayed.

The benchmark test was performed on July 18, 2024.
Information about the test system can be found at the bottom of the home page.
As an Amazon Associate I earn from qualifying purchases.