Average Bench: 58% (787th of 1040)

more Based on 121,503 user benchmarks.  Models: KINGSTON SA400S37120G, KINGSTON SA400S37120, KINGSTON SA400S37120G, KINGSTON SA400S3, KINGSTON KINGSTON SA400S3, KINGSTON SA400S37240G

Average average bench

The Kingston A400 120GB averaged 41.9% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K-64Thread Mixed IO Speed 91.1MB/s
Avg. 4K Random Read Speed 25.8MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 120GB is 43.7%. This is a relatively wide range which indicates that the Kingston A400 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 107MB/s
Avg. 4K-64Thread Read Speed 135MB/s

Average Bench

(Based on 121,503 samples)
Min Avg Max
281 Read 384 483
57.5 Write 238 410
22.7 Mixed 234 364
38.6 SusWrite 107 262
53.4% 241 MB/s
Min Avg Max
12.3 4K Read 25.8 35.6
9.59 4K Write 56.7 96.7
4.89 4K Mixed 22.7 39.4
98% 35 MB/s
Min Avg Max
24.8 DQ Read 135 244
12.6 DQ Write 171 329
10.2 DQ Mixed 91.1 187
86% 132 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
83GB free
Firmware: SBFK71E0
SusWrite @10s intervals: 260 54 53 50 1.5 45 MB/s
Read 396
Write 338
Mixed 276
SusWrite 77.3
61% 272 MB/s
4K Read 25
4K Write 66.5
4K Mixed 22.1
101% 37.9 MB/s
DQ Read 161
DQ Write 183
DQ Mixed 115
102% 153 MB/s
9GB free (System drive)
Firmware: SBFKB1D1
SusWrite @10s intervals: 43 31 27 26 57 18 MB/s
Read 287
Write 87.7
Mixed 157
SusWrite 33.6
31% 141 MB/s
4K Read 24.8
4K Write 77.4
4K Mixed 25.1
111% 42.4 MB/s
DQ Read 151
DQ Write 134
DQ Mixed 93.2
83% 126 MB/s
32GB free (System drive)
Firmware: SBFKB1D1
SusWrite @10s intervals: 98 50 14 23 138 39 MB/s
Read 326
Write 104
Mixed 124
SusWrite 60.2
34% 154 MB/s
4K Read 20.7
4K Write 37.5
4K Mixed 17.5
74% 25.2 MB/s
DQ Read 39.2
DQ Write 41.9
DQ Mixed 36.1
28% 39.1 MB/s
10GB free (System drive)
Firmware: SBFKB1E2
SusWrite @10s intervals: 82 58 22 31 47 38 MB/s
Read 319
Write 50.2
Mixed 58.7
SusWrite 46.3
26% 119 MB/s
4K Read 18.3
4K Write 11.1
4K Mixed 7.7
44% 12.4 MB/s
DQ Read 24.9
DQ Write 19.9
DQ Mixed 17.9
15% 20.9 MB/s
121,503 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 38,047,896 SSDs tested.


AmazonUS $2021 mins
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Typical A400 120GB Builds (Compare 50,029 builds) See popular component choices, score breakdowns and rankings.
Gaming 48%
Desktop 81%
Aircraft carrier
Workstation 45%
Speed boat

Motherboard: Gigabyte B450M DS3H - $73

EDIT WITH CUSTOM PC BUILDER Value: 73% - Very good Total price: $571

Popular A400 120GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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  • - CPU tests include: integer, floating and string.
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Solid State Drive Rankings (Price vs Performance) January 2021 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC

Added n/a ago.


21 days ago.

The write speed has deteriorated a lot in just an year. The seq write speed decresed from 300MB/s to only 50MB/s.


13 months ago.

Very slow SSD wish I never bought it


20 months ago.

My bios never recognised that disk even though it worked with the Samsung 840 Evo and 850 Evo. Bad choise.


8 months ago.

very low write speeds about 50MB/S


6 months ago.

It sais 500mb read and its like 50. Wtf?


2 years ago.

poor life time...30 days drop to 97%


4 months ago.

It's cheap, the performance and capacity is cheap.


2 years ago.

It's not bad,but doesn't have TRIM support...


4 months ago.

Offers poor performance over other SSDs at around the same price point with low read and write speeds and very small capacity.


11 months ago.

It is perfect for a laptop drive, not so much for a gaming PC. The low capacity on this drive also makes it a very poor game drive. On the flip side, boot times are 2-3x as fast as a traditional hard drive.


12 months ago.

The most basic SSD par excellence, useful to improve performance with little money expenditure.


24 months ago.

Its okay for a budget SSD and for just storing the OS and nothing else on it, but you may as well spend slightly more money for more space and faster speeds.


21 months ago.

Horrible SSD, uses a controller with a known reputation for failing, and is more expensive than significantly better SSDs, like the WD Green, SU650, and L5 Lite 3D

1040 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

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Intel Core i5-9600K $200Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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