Average Bench: 70.1% (591st of 1011)

more Based on 19,605 user benchmarks.  Models: KINGSTON SA400S37480G, KINGSTON SA400S37480, KINGSTON SA400S37480G, KINGSTON SA400S37480G, KINGSTON SA400S3748, KINGSTON SA400S3, KINGSTON SA400S37120G

Good average bench

The Kingston A400 480GB averaged 29.9% 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 134MB/s
Avg. 4K Random Read Speed 26.6MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 480GB is 53.4%. This is a relatively wide range which indicates that the Kingston A400 480GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 211MB/s
Avg. Sequential Write Speed 228MB/s

Average Bench

(Based on 19,605 samples)
Min Avg Max
163 Read 344 500
97.1 Write 228 441
81.2 Mixed 270 412
71.9 SusWrite 211 346
58.9% 263 MB/s
Min Avg Max
13.1 4K Read 26.6 36.3
16.7 4K Write 63.7 97
5.47 4K Mixed 28.8 43
111% 39.7 MB/s
Min Avg Max
14.2 DQ Read 203 299
15.1 DQ Write 230 335
13.8 DQ Mixed 134 221
124% 189 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
329GB free
Firmware: SBFKB1D1
SusWrite @10s intervals: 246 260 292 344 293 344 MB/s
Read 242
Write 98.2
Mixed 83
SusWrite 296
40% 180 MB/s
4K Read 13.9
4K Write 20
4K Mixed 10.7
45% 14.9 MB/s
DQ Read 13
DQ Write 15.3
DQ Mixed 14.2
11% 14.2 MB/s
407GB free
Firmware: SBFKB1D1
SusWrite @10s intervals: 271 261 331 288 335 290 MB/s
Read 163
Write 99.2
Mixed 80.5
SusWrite 296
36% 160 MB/s
4K Read 14.7
4K Write 20.3
4K Mixed 11
47% 15.3 MB/s
DQ Read 13.2
DQ Write 15.5
DQ Mixed 14.4
11% 14.4 MB/s
19,605 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 17,666,076 SSDs tested.


EbayUS $5319 mins
AmazonUS $5314 mins
OutletPCUS $6112 hrs
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Typical A400 480GB Builds (Compare 15,163 builds) See popular component choices, score breakdowns and rankings.
Gaming 54%
Desktop 66%
Battle cruiser
Workstation 56%

Motherboard: Gigabyte B450M DS3H - $65

EDIT WITH CUSTOM PC BUILDER Value: 79% - Very good Total price: $482

Popular A400 480GB 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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  • - 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) September 2019 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.

Good (edit your comment) Add link

1 month ago.

complete garbage, needs a firmware update, freezes and stutters for 5-20 seconds every few minutes, makes for anything but the most basic of internet browsing/youtube checking impossible or mind numbingly annoying to do.


12 days ago.

terrible performance. absolutely unusable as a main drive, so much stuttering, freezing and slow loading speeds


9 months ago.

OS (win10 and linux mint 19) freezes and stutters for a few seconds when installed on this SSD.


4 months ago.

Cheap drive that is suitable for gaming, but performs poorly in Windows and can stutter/freeze with heavy usage. Kingston should release a new firmware to address these issues.


2 months ago.

i need some opinion, do u guys encounter freeze in game while put this A400 on main drive windows, i get freeze game on csgo and pubg everytime i play on it.


4 months ago.

Poor write performance, its fast when its empty ~ 200MB/s, however when it passes 20%, it becomes terrible, about 40-50MB/s, on occasion it drops below 10. On linux its useless, ubuntu 18 freezes every few minutes.


3 months ago.

Has a freezing problem, kingston need to update the firmware on these things

1011 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

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