TEST: Western Digital WD_BLACK SN850X 1TB M.2 SSD

Technical data
Image
Manufacturer	Western Digital
Model number	WDS100T2X0E-00BCA0
Storage capacity	1024 GB (932 GiB)
Read speed	7300 MB/s
Write speed	6300 MB/s
Interface	PCIe 4.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	✓ yes
TBW (Total Bytes Written)	600 Terabyte
Controller	WD 20-82-10034-A1
Price	ca. 85 AUD (= 0,08 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

98 %

Write speed

93 %

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

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

AS SSD Benchmark

Standard performance test

The standard test was performed with a 5 GB file. A total score of 8113 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	6040,51 MB/s	5837,72 MB/s
4K in megabytes per second	75,50 MB/s	195,89 MB/s
4K-64Thrd in megabytes per second	2246,96 MB/s	2915,97 MB/s
Access time in milliseconds	0,019 ms	0,093 ms
Score	2927	3696
Total score	8113

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 18, 2022 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	2112,14 MB/s	1,09 s
Program many small files	1242,87 MB/s	5,66 s
Game small and large files	1851,27 MB/s	3,73 s

Compression Performance Test

Here, the writing and reading speed of the the Western Digital SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 7300MB/s and 6300MB/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	7298,21	6371,56
SEQ1M Q1T1	5020,63	5734,50
RND4K Q32T16	3346,71	3107,89
RND4K Q1T1	80,30	214,99