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

Here you can find a detailed performance and benchmark test of the M.2 NVMe SSD WD_BLACK SN850X with 1TB (WDS100T2X0E-00BCA0) from Western Digital.
Score
8113
Price/GB
0,08 €


Technical data
Image WD_BLACK SN850X
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 USD (= 0,08 $ / GB)
Paid link Buy on Amazon
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Compared to the top performer*
Read speed
98 %
Write speed
93 %

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


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 TEST: Western Digital WD_BLACK SN850X 1TB

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 TEST: Western Digital WD_BLACK SN850X 1TB
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).

AS SSD TEST: Western Digital WD_BLACK SN850X 1TB

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CrystalDiskMark Benchmark TEST: Western Digital WD_BLACK SN850X 1TB
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

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
6.960,10
6.076,40
SEQ1M
Q1T1
4.788,00
5.468,80
RND4K
Q32T16
817.067,00
758.762,00
RND4K
Q1T1
19.605,00
52.486,60

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
1.148,61
1.314,11
SEQ1M
Q1T1
208,67
182,64
RND4K
Q32T16
624,50
670,34
RND4K
Q1T1
50,86
18,90

HD Tune Pro Endurance test

A long-term test was performed here to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases.

HD Tune Endurance Test TEST: Western Digital WD_BLACK SN850X 1TB

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.

HD Tune TEST: Western Digital WD_BLACK SN850X 1TB

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 can be written and read.

ATTO Disk Benchmark TEST: Western Digital WD_BLACK SN850X 1TB

SSD-Z 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.

SSD-Z TEST: Western Digital WD_BLACK SN850X 1TB


Information about the test system can be found at the bottom of the home page.
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