TEST: Western Digital WD_BLACK SN850 1TB M.2 SSD

Here you can find a detailed performance and benchmark test of the M.2 NVMe SSD WD_BLACK SN850 with 1TB (WDS100T1X0E-00AFY0) from Western Digital.
Score
8590
Price/GB
0,13 €


Technical data
Image WD_BLACK SN850
Manufacturer Western Digital
Model number WDS100T1X0E-00AFY0
Storage capacity 1024 GB (931 GiB)
pSLC-Cache 285 GB approx.
Read speed 7000 MB/s
Write speed 5300 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. 130 USD (= 0,13 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
95 %
Write speed
86 %

*) 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 8590 points was achieved.

AS SSD TEST: Western Digital WD_BLACK SN850 1TB

AS SSD Read: Write:
Seq
in megabytes per second
5872,31 MB/s
5194,93 MB/s
4K
in megabytes per second
75,68 MB/s
211,02 MB/s
4K-64Thrd
in megabytes per second
2598,19 MB/s
2963,93 MB/s
Access time
in milliseconds
0,018 ms
0,089 ms
Score
3261
3694
Total score
8590

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 September 29, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: Western Digital WD_BLACK SN850 1TB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
2102,81 MB/s
1,09 s
Program
many small files
785,64 MB/s
8,96 s
Game
small and large files
1574,80 MB/s
4,39 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 7000MB/s and 5300MB/s respectively).

AS SSD TEST: Western Digital WD_BLACK SN850 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 SN850 1TB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
7033,99
5222,73
SEQ1M
Q1T1
4356,48
5230,67
RND4K
Q32T16
4092,40
2907,25
RND4K
Q1T1
81,14
220,13

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
6.708,10
4.980,80
SEQ1M
Q1T1
4.154,70
4.988,40
RND4K
Q32T16
999.121,00
709.778,00
RND4K
Q1T1
19.810,30
53.742,20

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
1.191,93
1.603,66
SEQ1M
Q1T1
240,50
200,29
RND4K
Q32T16
501,78
720,13
RND4K
Q1T1
50,36
18,48

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 SN850 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 SN850 1TB


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