TEST: Western Digital WD Green 2TB SATA SSD

Technical data
Image
Manufacturer	Western Digital
Model number	WDS200T2G0A
Storage capacity	2048 GB (1863 GiB)
pSLC-Cache	4 GB approx.
Read speed	545 MB/s
Write speed	not specified
Interface	SATA 6 Gbps
Connection	2.5"
Memory module (NAND)	TLC
Controller	Silicon Motion SM2256S
Price	ca. 115 USD (= 0,06 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

97 %

Write speed

85 %

*) 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 1 GB file. A total score of 422 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	506,22 MB/s	430,26 MB/s
4K in megabytes per second	16,58 MB/s	38,77 MB/s
4K-64Thrd in megabytes per second	92,39 MB/s	96,19 MB/s
Access time in milliseconds	4,094 ms	0,700 ms
Score	160	178
Total score	422

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 January 10, 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	893,39 MB/s	1,20 s
Program many small files	1257,55 MB/s	1,12 s
Game small and large files	1563,93 MB/s	0,88 s

Compression Performance Test

This measures the write and read speed of the the Western Digital SATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 545 MB/s and 0 MB/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	541,56	451,18
SEQ1M Q1T1	489,19	411,97
RND4K Q32T16	124,10	107,42
RND4K Q1T1	23,25	40,41

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 20 GB was written to the medium. After approx. 4 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 435 MB/s and written with 185 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the Western Digital SATA 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 SATA SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they were written and read.

SSD-Z Benchmark

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

The benchmark test was performed on January 10, 2023.
Information about the test system can be found at the bottom of the home page.
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