TEST: Western Digital WD_BLACK SN850 2TB M.2 SSD

AS SSD Benchmark 2.0

Standard performance test

The standard test was performed with a 5 GB file. Here, a total score of 7911 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	5801,10 MB/s	5096,68 MB/s
4K in megabytes per second	66,44 MB/s	192,91 MB/s
4K-64Thrd in megabytes per second	2399,71 MB/s	2641,19 MB/s
Access time in milliseconds	0,018 ms	0,094 ms
Score	3046	3344
Total score	7911

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 Windows Copy command (the cache remains enabled). The practical test of 05.05.2021 shows the performance for simultaneous write and read operations. The lower the duration, the better.

AS SSD Kopier-Benchmark	Transferrate:	Dauer:
ISO two large files	2041,46 MB/s	1,13 s
Program many small files	164,05 MB/s	42,91 s
Game small and large files	1923,69 MB/s	3,59 s

Compression Performance Test

Here, the write as well as read speed (according to the manufacturer 7000 MB/s and 5100 MB/s) the Western Digital SSD is measured depending on the compressibility of the data.

CrystalDiskMark 7.0 Benchmark

Similar to AS SSD, two sequential and two random performance tests are performed.

CDM	Read [MB/s]	Write [MB/s]
SEQ1M Q8T1	7070,26	5189,83
SEQ1M Q1T1	4269,34	5163,23
RND4K Q32T16	3553,43	2846,33
RND4K Q1T1	72,28	238,73

ATTO Disk Benchmark 4

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 can usually be written and read.

HD Tune Pro 5.75 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.

HD Tune Endurance test

A long-term test was performed here to fully utilize the memory. You can see when a cache is full and the write performance decreases.

SSD-Z 16 Benchmark

Similar to HD Tune, a 500 MB file is written to the Western Digital M.2 SSD here. is written. The transfer data is displayed. The more constant the line, the better. Unfortunately the tool does not work correctly from about 5,000 MB/s and no line (and partly wrong min and max data) is displayed.

The benchmark test was performed on 05.05.2021. Information about the test system can be found at the bottom of the home page.