Average Bench: 59.7% (783rd of 1055)

more Based on 124,895 user benchmarks.  Models: KINGSTON SA400S37120G, KINGSTON SA400S37120, KINGSTON SA400S37120G, KINGSTON SA400S3, KINGSTON KINGSTON SA400S3, KINGSTON SA400S37240G

Average average bench

The Kingston A400 120GB averaged 40.2% 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 85.7MB/s
Avg. 4K Random Read Speed 26.1MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 120GB is 44.3%. This is a relatively wide range which indicates that the Kingston A400 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 101MB/s
Avg. 4K-64Thread Read Speed 139MB/s

Average Bench

(Based on 124,895 samples)
Min Avg Max
294 Read 401 503
79 Write 256 420
25.5 Mixed 250 377
42.2 SusWrite 101 181
56% 252 MB/s
Min Avg Max
12.2 4K Read 26.1 35.7
9.23 4K Write 58.8 94.4
2.35 4K Mixed 23.9 42
101% 36.3 MB/s
Min Avg Max
28.9 DQ Read 139 253
12 DQ Write 178 334
1.2 DQ Mixed 85.7 184
84.9% 134 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
52GB free (System drive)
Firmware: S3500102
SusWrite @10s intervals: 133 123 31 128 19 12 MB/s
Read 470
Write 403
Mixed 363
SusWrite 74.4
73% 328 MB/s
4K Read 28
4K Write 101
4K Mixed 27
130% 52 MB/s
DQ Read 69.8
DQ Write 304
DQ Mixed 77.4
91% 150 MB/s
38GB free
Firmware: 03090004
SusWrite @10s intervals: 228 100 45 47 43 4.4 MB/s
Read 470
Write 329
Mixed 301
SusWrite 77.9
65% 294 MB/s
4K Read 32
4K Write 60.8
4K Mixed 38.4
130% 43.7 MB/s
DQ Read 147
DQ Write 136
DQ Mixed 118
95% 134 MB/s
46GB free (System drive)
Firmware: S3500102
SusWrite @10s intervals: 377 98 135 130 74 30 MB/s
Read 312
Write 288
Mixed 149
SusWrite 141
50% 222 MB/s
4K Read 19.2
4K Write 86.5
4K Mixed 26.1
108% 43.9 MB/s
DQ Read 76.7
DQ Write 300
DQ Mixed 76.1
91% 151 MB/s
42GB free (System drive)
Firmware: S3500102
SusWrite @10s intervals: 271 8.8 34 91 19 29 MB/s
Read 409
Write 356
Mixed 19
SusWrite 75.4
47% 215 MB/s
4K Read 12.9
4K Write 8.7
4K Mixed 6
32% 9.2 MB/s
DQ Read 58.1
DQ Write 11.3
DQ Mixed 20.5
19% 30 MB/s
124,895 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 40,206,528 SSDs tested.


AmazonUS $2556 secs
EbayUS $317 mins
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Typical A400 120GB Builds (Compare 54,374 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: 71% - Very good Total price: $580

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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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 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.

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12 days ago.

budget better to skimp on a cs900


2 months ago.

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


15 months ago.

Very slow SSD wish I never bought it


22 months ago.

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


10 months ago.

very low write speeds about 50MB/S


8 months ago.

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


2 years ago.

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


6 months ago.

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


2 years ago.

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


5 months ago.

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


12 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.


13 months ago.

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


2 years 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.


23 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

1055 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

The Best.
Intel Core i5-10600K $224Nvidia RTX 3060-Ti $400Crucial MX500 250GB $49
Intel Core i5-10400F $148Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i7-10700K $320Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $49
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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