TEST: Western Digital WD Green 120GB SATA SSD

Technical data
Image
Manufacturer	Western Digital
Model number	WDS120G2G0A
Storage capacity	120 GB (112 GiB)
Read speed	545 MB/s
Write speed	500 MB/s
Interface	SATA 6 Gbps
Connection	2.5"
Memory module (NAND)	TLC
TBW (Total Bytes Written)	40 Terabyte
Controller	Silicon Motion SM2256S
Price	ca. 18 USD (= 0,15 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

100 %

Write speed

100 %

*) 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 198 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	503,91 MB/s	300,24 MB/s
4K in megabytes per second	9,30 MB/s	36,45 MB/s
4K-64Thrd in megabytes per second	9,29 MB/s	33,31 MB/s
Access time in milliseconds	0,336 ms	0,458 ms
Score	69	100
Total score	198

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 December 19, 2020 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	484,18 MB/s	2,22 s
Program many small files	295,85 MB/s	4,76 s
Game small and large files	1503,27 MB/s	0,92 s

Compression Performance Test

This measures the write and read speed of the Western Digital SATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 545 MB/s and 500 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	531,83	314,12
SEQ1M Q1T1	486,83	318,33
RND4K Q32T16	124,62	91,82
RND4K Q1T1	24,14	39,92

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.

The benchmark test was performed on December 19, 2020.
Information about the test system can be found at the bottom of the home page.
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