TEST: Lexar High-Performance 633x 256GB

Technical data
Image
Manufacturer	Lexar
Model number	LSDMI256BBEU633A
Storage capacity	256 GB (233 GiB)
Read speed	100 MB/s
Write speed	45 MB/s
Connection
Price	ca. 35 AUD (= 0,14 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

100 %

Write speed

100 %

*) 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 GB file. A total score of 56 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	91,07 MB/s	79,85 MB/s
4K in megabytes per second	7,35 MB/s	3,30 MB/s
4K-64Thrd in megabytes per second	8,58 MB/s	3,69 MB/s
Access time in milliseconds	0,372 ms	1,123 ms
Score	25	15
Total score	56

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 01, 2023 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	73,40 MB/s	14,63 s
Program many small files	31,32 MB/s	44,93 s
Game small and large files	57,93 MB/s	23,84 s

Compression Performance Test

Here, the writing and reading speed of the SSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 100MB/s and 45MB/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	92,60	83,68
SEQ1M Q1T1	95,56	82,63
RND4K Q32T16	9,36	4,15
RND4K Q1T1	7,61	3,67