TEST: Western Digital WD_BLACK SN850 500GB M.2 SSDWD_BLACK SN850

Here you can find a detailed performance and benchmark test.
The the M.2 NVMe SSD WD_BLACK SN850 with 500GB (WDS500G1X0E-00AFY0) from Western Digital was tested.


Technical data
Manufacturer Western Digital
Type WDS500G1X0E-00AFY0
Storage capacity 500 GB (466 GiB)
Read speed 7000 MB/s
Write speed 4100 MB/s
Interface PCIe 4.0 x4
Form factor M.2 2280
Memory module (NAND) TLC
DRAM Cache ✓ yes
TBW (Total Bytes Written) 300 Terabyte
Controller WD Black G2 (20-82-10034-A1)
Price 97 USD (= 0,19 $ / GB)
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Score
7555
Price/GB
0,19 $
Compared to the top performer*
Read speed
96 %
Write speed
100 %

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


AS SSD Benchmark 2.0

Standard performance test

The standard test was performed with a 5 GB file. Here, a total score of 7555 points was achieved.

AS SSD TEST: Western Digital WD_BLACK SN850 500GB

AS SSD Read: Write:
Seq
in megabytes per second
5797,10 MB/s
4029,34 MB/s
4K
in megabytes per second
74,02 MB/s
200,59 MB/s
4K-64Thrd
in megabytes per second
2312,97 MB/s
2552,82 MB/s
Access time
in milliseconds
0,019 ms
0,092 ms
Score
2967
3156
Total score
7555

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 29.12.2020 shows the performance for simultaneous write and read operations. The lower the duration, the better.

AS SSD TEST: Western Digital WD_BLACK SN850 500GB
AS SSD Kopier-Benchmark Transferrate: Dauer:
ISO
two large files
1431,42 MB/s
0,75 s
Program
many small files
792,52 MB/s
1,78 s
Game
small and large files
1501,05 MB/s
0,92 s

Compression Performance Test

Here, the write as well as read speed (according to the manufacturer 7000 MB/s and 4100 MB/s) the Western Digital SSD is measured depending on the compressibility of the data.

AS SSD TEST: Western Digital WD_BLACK SN850 500GB

CrystalDiskMark 7.0 Benchmark


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

CrystalDiskMark Benchmark TEST: Western Digital WD_BLACK SN850 500GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
6814,10
4180,81
SEQ1M
Q1T1
4114,99
4176,77
RND4K
Q32T16
3300,98
2736,90
RND4K
Q1T1
81,22
244,99

Input/Output operations per second

CDM Read [IPOS] Write [IPOS]
SEQ1M
Q8T1
6.498,40
3.987,10
SEQ1M
Q1T1
3.924,40
3.983,30
RND4K
Q32T16
805.904,00
668.190,00
RND4K
Q1T1
19.828,60
59.811,50

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
1.229,79
2.001,99
SEQ1M
Q1T1
254,57
250,53
RND4K
Q32T16
631,84
763,99
RND4K
Q1T1
50,27
16,60

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.

ATTO Disk Benchmark TEST: Western Digital WD_BLACK SN850 500GB

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 TEST: Western Digital WD_BLACK SN850 500GB

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.

SSD-Z TEST: Western Digital WD_BLACK SN850 500GB

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