TEST: Western Digital WD Green SN3000 1TB M.2 SSD

Technical data
Image
Manufacturer	Western Digital
Model number	WDS100T4G0E-00CPS0
Storage capacity	1024 GB (932 GiB)
pSLC-Cache	212 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)	150 Terabyte
Controller	SanDisk A101-000-172-A1
Price	ca. 85 USD (= 0,08 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

69 %

Write speed

64 %

*) 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 5107 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	4380,26 MB/s	3956,76 MB/s
4K in megabytes per second	78,58 MB/s	187,07 MB/s
4K-64Thrd in megabytes per second	1099,26 MB/s	2082,74 MB/s
Access time in milliseconds	0,018 ms	0,104 ms
Score	1616	2665
Total score	5107

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	2166,16 MB/s	1,06 s
Program many small files	1152,06 MB/s	6,11 s
Game small and large files	1866,88 MB/s	3,70 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	5128,10	4354,20
SEQ1M Q1T1	4463,28	4325,07
RND4K Q32T16	2452,92	2436,15
RND4K Q1T1	91,04	210,85

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. 212 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 4395 MB/s and written with 649 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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