TEST: Western Digital WD_BLACK SN750 2TB M.2 SSD

Technical data
Image
Manufacturer	Western Digital
Model number	WDS200T3XHC-00SJG0
Storage capacity	2048 GB (1863 GiB)
pSLC-Cache	28 GB approx.
Read speed	3400 MB/s
Write speed	2900 MB/s
Interface	PCIe 3.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	✓ yes
TBW (Total Bytes Written)	1200 Terabyte
Controller	WD 20-82-007011
Price	ca. 250 USD (= 0,12 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

77 %

Write speed

89 %

*) 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 5142 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	2342,74 MB/s	2559,38 MB/s
4K in megabytes per second	46,11 MB/s	180,61 MB/s
4K-64Thrd in megabytes per second	1501,16 MB/s	1999,27 MB/s
Access time in milliseconds	0,021 ms	0,102 ms
Score	1782	2436
Total score	5142

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 November 20, 2021 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	1621,93 MB/s	1,42 s
Program many small files	1221,48 MB/s	5,76 s
Game small and large files	1799,99 MB/s	3,84 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 3400 MB/s and 2900 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	2885,33	3068,68
SEQ1M Q1T1	1860,93	2975,95
RND4K Q32T16	1755,27	2176,43
RND4K Q1T1	43,02	200,39

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 50 GB was written to the medium. After approx. 28 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 2408 MB/s and written with 2060 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the Western Digital 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 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 November 20, 2021.
Information about the test system can be found at the bottom of the home page.
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