Average Bench: 63.9% (680th of 1011)

Based on 83,586 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 36.0% 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 88.7MB/s
Avg. 4K Random Read Speed 27.4MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 54.1%. This is a relatively wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 141MB/s
Avg. Sequential Mixed IO Speed 260MB/s

Average Bench

(Based on 83,586 samples)
Min Avg Max
291 Read 423 507
105 Write 313 446
17.3 Mixed 260 425
58.2 SusWrite 141 393
63.3% 284 MB/s
Min Avg Max
14.4 4K Read 27.4 35.9
8.3 4K Write 58.3 103
0.5 4K Mixed 21.8 40.3
100% 35.8 MB/s
Min Avg Max
30.5 DQ Read 192 274
11.3 DQ Write 205 337
0.98 DQ Mixed 88.7 209
97.2% 162 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
155GB free
Firmware: S1Z40102
SusWrite @10s intervals: 442 438 345 111 28 75 MB/s
Read 507
Write 418
Mixed 432
SusWrite 240
90% 399 MB/s
4K Read 34.4
4K Write 106
4K Mixed 32.4
150% 57.7 MB/s
DQ Read 249
DQ Write 267
DQ Mixed 47.9
94% 188 MB/s
67GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 234 124 83 61 57 66 MB/s
Read 494
Write 411
Mixed 421
SusWrite 104
80% 358 MB/s
4K Read 32.4
4K Write 16.3
4K Mixed 1.2
59% 16.6 MB/s
DQ Read 224
DQ Write 239
DQ Mixed 0.4
64% 155 MB/s
61GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 356 38 77 40 73 56 MB/s
Read 471
Write 409
Mixed 27.8
SusWrite 107
56% 254 MB/s
4K Read 25
4K Write 15.8
4K Mixed 10.4
60% 17.1 MB/s
DQ Read 238
DQ Write 18.9
DQ Mixed 1.2
33% 86.2 MB/s
83,586 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 18,505,215 SSDs tested.


Approx. $50 @ launch in Jan '17
EbayUS $3116 mins
AmazonUS $329 mins
OutletPCUS $3715 hrs
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Typical A400 240GB Builds (Compare 17,131 builds) See popular component choices, score breakdowns and rankings.
Gaming 53%
Desktop 64%
Workstation 56%

Motherboard: Gigabyte B450M DS3H - $71

EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $447

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) October 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 19 months ago.

Liked (edit your comment) Add link

1 day ago.

Info  graphicscardhub.com/...

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


1 month ago.

Tested both, this one was way better


1 month ago.

good price


6 months ago.

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


4 months ago.

Has a freezing problem and needs firmware updates.


8 months ago.

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


5 months ago.

minecraft has never loaded faster

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 1660 $210Samsung 850 Evo 250GB $73
Intel Core i5-9600K $240Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia RTX 2060 $349Samsung 850 Pro 256GB $200
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
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