TEST: Western Digital WD Green SN3000 2TB M.2 SSD

Technical data
Image
Manufacturer	Western Digital
Model number	WDS200T4G0E-00CPS0
Storage capacity	2048 GB (1863 GiB)
pSLC-Cache	>400 GB approx.
Read speed	5000 MB/s
Write speed	4200 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	QLC
DRAM Cache	no
TBW (Total Bytes Written)	250 Terabyte
Controller	SanDisk A101-000-172-A1
Price	ca. 152 USD (= 0,07 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

69 %

Write speed

62 %

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

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 5147 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	4402,82 MB/s	3946,17 MB/s
4K in megabytes per second	77,92 MB/s	186,92 MB/s
4K-64Thrd in megabytes per second	1092,62 MB/s	2132,84 MB/s
Access time in milliseconds	0,020 ms	0,105 ms
Score	1611	2714
Total score	5147

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 21, 2025 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	2236,69 MB/s	1,03 s
Program many small files	1136,77 MB/s	6,19 s
Game small and large files	1910,54 MB/s	3,62 s

Compression Performance Test

This measures the write and read speed of the Western Digital SSD, depending on the compressibility of the data (according to the manufacturer, these should be 5000 MB/s and 4200 MB/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	5125,23	4415,22
SEQ1M Q1T1	4187,14	3922,87
RND4K Q32T16	2433,57	2372,59
RND4K Q1T1	90,12	207,63

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 400 GB was written to the medium. The exact cache size could not be determined, because the test file did not exhaust the cache (brought it to the limit). At least the test file could be read with an average write speed of 4528 MB/s and written with 3884 MB/s.

ATTO Disk Benchmark

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

SSD-Z Benchmark

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

The benchmark test was performed on July 21, 2025.
Information about the test system can be found at the bottom of the home page.
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