TEST: Kingston A400 960GB SATA SSD

Technical data
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Manufacturer	Kingston
Model number	SA400S37/960G
Storage capacity	960 GB (894 GiB)
pSLC-Cache	>200 GB approx.
Read speed	500 MB/s
Write speed	450 MB/s
Interface	SATA 6 Gbps
Connection	2.5"
Memory module (NAND)	QLC
TBW (Total Bytes Written)	300 Terabyte
Controller	Silicon Motion SM2259
Price	ca. 54 USD (= 0,06 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

85 %

Write speed

98 %

*) 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 715 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	442,94 MB/s	420,73 MB/s
4K in megabytes per second	40,87 MB/s	72,42 MB/s
4K-64Thrd in megabytes per second	202,46 MB/s	150,16 MB/s
Access time in milliseconds	0,041 ms	0,123 ms
Score	288	265
Total score	715

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 20, 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	997,45 MB/s	1,08 s
Program many small files	1165,75 MB/s	1,21 s
Game small and large files	1546,58 MB/s	0,89 s

Compression Performance Test

This measures the write and read speed of the the Kingston SATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 500 MB/s and 450 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	467,61	476,44
SEQ1M Q1T1	451,06	470,28
RND4K Q32T16	157,69	193,99
RND4K Q1T1	34,02	78,86

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 200 GB was written to the medium. The exact cache size could not be determined, because the test file did not exhaust the cache (brought it to the limit).At least the test file could be read with an average write speed of 436 MB/s and written with 463 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the Kingston 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 Kingston 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 Kingston SATA SSD here. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on September 20, 2023.
Information about the test system can be found at the bottom of the home page.
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