TEST: Western Digital WD Red SN700 500GB M.2 SSD

Technical data
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Manufacturer	Western Digital
Model number	WDS500G1R0C
Storage capacity	500 GB (466 GiB)
pSLC-Cache	6 GB approx.
Read speed	3430 MB/s
Write speed	2600 MB/s
Interface	PCIe 3.0 x4
Connection	M.2 2280
Memory module (NAND)	TLC
DRAM Cache	✓ yes
TBW (Total Bytes Written)	1000 Terabyte
Controller	WD 20-82-00700-A2
Price	ca. 80 USD (= 0,16 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

89 %

Write speed

81 %

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

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 3401 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	3043,19 MB/s	2600,01 MB/s
4K in megabytes per second	51,24 MB/s	172,33 MB/s
4K-64Thrd in megabytes per second	1026,78 MB/s	892,05 MB/s
Access time in milliseconds	0,022 ms	0,107 ms
Score	1382	1324
Total score	3401

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 August 02, 2023 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	2120,18 MB/s	1,08 s
Program many small files	1104,90 MB/s	6,37 s
Game small and large files	1441,14 MB/s	4,79 s

Compression Performance Test

This measures the write and read speed of the the Western Digital SSDSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 3430MB/s and 2600MB/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	3405,42	2715,82
SEQ1M Q1T1	2060,25	2717,38
RND4K Q32T16	1483,89	1722,03
RND4K Q1T1	47,52	195,60

HD Tune Pro Endurance test

This is a long term test to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 300 GB was written to the medium. After approx. 6 GB, the pSLC-Cache was full and the performance was throttled.
At least the test file could be read with an average write speed of 3136 MB/s and written with 1017 MB/s.

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.

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.

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the Western Digital M.2 SSD here. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on August 02, 2023.
Information about the test system can be found at the bottom of the home page.
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