Average Bench: 64.5% (671st of 1011)

Based on 102,389 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 35.4% 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 Random Read Speed 27.5MB/s
Avg. 4K-64Thread Mixed IO Speed 79.8MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 59.1%. This is a relatively wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 158MB/s
Avg. Sequential Mixed IO Speed 270MB/s

Average Bench

(Based on 102,389 samples)
Min Avg Max
293 Read 423 508
98 Write 303 444
19.6 Mixed 270 427
55.2 SusWrite 158 422
64.3% 289 MB/s
Min Avg Max
14.2 4K Read 27.5 36.7
6.87 4K Write 57.8 108
0.5 4K Mixed 21.1 37.8
99.4% 35.5 MB/s
Min Avg Max
36.7 DQ Read 190 271
12.9 DQ Write 208 343
0.7 DQ Mixed 79.8 206
93% 159 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
200GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 393 407 396 418 432 433 MB/s
Read 467
Write 420
Mixed 414
SusWrite 413
96% 428 MB/s
4K Read 28
4K Write 74.5
4K Mixed 27.1
117% 43.2 MB/s
DQ Read 217
DQ Write 316
DQ Mixed 47.4
97% 194 MB/s
201GB free (System drive)
Firmware: SBFKB1E1
SusWrite @10s intervals: 226 227 216 215 216 230 MB/s
Read 305
Write 211
Mixed 212
SusWrite 222
53% 237 MB/s
4K Read 28.5
4K Write 48.1
4K Mixed 26.1
102% 34.2 MB/s
DQ Read 56.3
DQ Write 339
DQ Mixed 213
159% 203 MB/s
102,389 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,849,350 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $323 mins
EbayUS $328 mins
OutletPCUS $384 days
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Typical A400 240GB Builds (Compare 20,607 builds) See popular component choices, score breakdowns and rankings.
Gaming 55%
Desktop 65%
Workstation 56%

Motherboard: Gigabyte B450M DS3H - $71

EDIT WITH CUSTOM PC BUILDER Value: 88% - Excellent Total price: $435

Popular A400 240GB 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) December 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

Dramatically improves the responsiveness of your system...

Added 21 months ago.

Liked (edit your comment) Add link

1 month ago.

Info  graphicscardhub.com/...

Recently got this SSD for my laptop and getting around 400 MB/s read and write speeds.


2 months ago.

Tested both, this one was way better


23 days ago.

Great physical size in cases fits just about anywhere cheap fast for price and good capacity. Would recommend.


6 months ago.

Has a freezing problem and needs firmware updates.


2 days ago.

could have used some DRAM, stutters when booting.


9 months ago.

Cheap price, fast read/write speeds, trusted brand name... whats not to like?


10 days ago.

Affordable and reliable!

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

 Best User Rated

The Best.
Intel Core i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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