Average Bench: 77.3% (485th of 1026)

more Based on 59,114 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 22.7% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Kingston A400 480GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 133MB/s
Avg. 4K Random Read Speed 26.5MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 480GB is 62.9%. This is a particularly wide range which indicates that the Kingston A400 480GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 284MB/s
Avg. Sequential Write Speed 301MB/s

Average Bench

(Based on 59,114 samples)
Min Avg Max
202 Read 371 490
96.4 Write 301 461
44.3 Mixed 284 393
80.8 SusWrite 301 463
70.6% 314 MB/s
Min Avg Max
12 4K Read 26.5 35.5
14.2 4K Write 66.4 96.6
8.46 4K Mixed 29 40.3
113% 40.6 MB/s
Min Avg Max
14.5 DQ Read 191 280
15.4 DQ Write 254 356
14.3 DQ Mixed 133 215
126% 193 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
447GB free
Firmware: SBFKK1B3
SusWrite @10s intervals: 326 372 444 449 456 455 MB/s
Read 392
Write 327
Mixed 334
SusWrite 417
83% 367 MB/s
4K Read 33.5
4K Write 102
4K Mixed 40.2
156% 58.4 MB/s
DQ Read 218
DQ Write 314
DQ Mixed 166
153% 232 MB/s
105GB free (System drive)
Firmware: SBFKK1B3
SusWrite @10s intervals: 435 449 444 463 456 23 MB/s
Read 401
Write 436
Mixed 337
SusWrite 378
88% 388 MB/s
4K Read 33.3
4K Write 96.4
4K Mixed 39.9
153% 56.5 MB/s
DQ Read 216
DQ Write 256
DQ Mixed 170
146% 214 MB/s
375GB free (System drive)
Firmware: SBFKK1B3
SusWrite @10s intervals: 430 433 438 443 443 438 MB/s
Read 403
Write 430
Mixed 346
SusWrite 438
91% 404 MB/s
4K Read 31.6
4K Write 85.3
4K Mixed 37.5
141% 51.5 MB/s
DQ Read 184
DQ Write 187
DQ Mixed 144
120% 172 MB/s
447GB free
Firmware: SBFKK1B3
SusWrite @10s intervals: 251 252 253 252 251 252 MB/s
Read 350
Write 236
Mixed 255
SusWrite 252
61% 273 MB/s
4K Read 31.2
4K Write 80.6
4K Mixed 37.3
138% 49.7 MB/s
DQ Read 190
DQ Write 177
DQ Mixed 144
119% 171 MB/s
208GB free (System drive)
Firmware: SBFKB1D1
SusWrite @10s intervals: 311 271 324 275 276 324 MB/s
Read 169
Write 98
Mixed 82.8
SusWrite 297
36% 162 MB/s
4K Read 14.6
4K Write 20.1
4K Mixed 11.2
47% 15.3 MB/s
DQ Read 13.9
DQ Write 15.6
DQ Mixed 14.5
11% 14.7 MB/s
59,114 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 26,650,246 SSDs tested.


OutletPCUS $534 months
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Typical A400 480GB Builds (Compare 41,593 builds) See popular component choices, score breakdowns and rankings.
Gaming 56%
Desktop 70%
Battle cruiser
Workstation 62%

Motherboard: Gigabyte B450M DS3H - $73

EDIT WITH CUSTOM PC BUILDER Value: 82% - Excellent Total price: $506

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.

UserBenchmark of the month

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.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) May 2020 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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5 days 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.


1 month ago.

Tested in multiple scenarios, this SSD is reading at 200Mbps instead of the 500Mbps promised by Kingston. This SSD delivers 40% of it's promised read speed on my end, even after updating the firmware to the current version.


19 days ago.

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


3 days 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.


1 month ago.

It's been reported to have lots of issues


11 days 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.


12 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.


4 months ago.

Worst drive i have ever owned, freezes frequenltly, unusable


7 months ago.

i use it for a while and i can say all good things about this SSD, it is not the fastest around but for the price is everything u looked for and that's it! Thumbs up! Good SSD from 1 to 5 = solid 4


11 months ago.

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


5 months ago.

needs DRAM as booting causes stutters on this one

1026 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.

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