Average Bench: 64% (677th of 1011)

Based on 68,384 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 86.4MB/s
Avg. 4K Random Read Speed 26.9MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 64.2%. This is a particularly wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 155MB/s
Avg. Sequential Mixed IO Speed 262MB/s

Average Bench

(Based on 68,384 samples)
Min Avg Max
302 Read 424 509
104 Write 315 450
15.2 Mixed 262 426
57.8 SusWrite 155 409
64.4% 289 MB/s
Min Avg Max
14.2 4K Read 26.9 36.9
6.31 4K Write 56.7 109
0.46 4K Mixed 21 39.6
97.7% 34.9 MB/s
Min Avg Max
37.4 DQ Read 193 271
11.8 DQ Write 213 343
0.6 DQ Mixed 86.4 208
97.3% 164 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
109GB free (System drive)
Firmware: SBFKB1D1
SusWrite @10s intervals: 178 201 202 56 56 105 MB/s
Read 337
Write 201
Mixed 215
SusWrite 133
49% 222 MB/s
4K Read 23.3
4K Write 68.4
4K Mixed 25.6
104% 39.1 MB/s
DQ Read 218
DQ Write 206
DQ Mixed 116
114% 180 MB/s
133GB free (System drive)
Firmware: 0102
SusWrite @10s intervals: 250 218 53 21 56 28 MB/s
Read 492
Write 438
Mixed 16.7
SusWrite 104
58% 263 MB/s
4K Read 31.7
4K Write 10.3
4K Mixed 24
84% 22 MB/s
DQ Read 218
DQ Write 18.7
DQ Mixed 1.3
31% 79.4 MB/s
68,384 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 16,944,087 SSDs tested.


Approx. $50 @ launch in Jan '17
EbayUS $3018 mins
AmazonUS $3210 mins
OutletPCUS $3722 hrs
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Typical A400 240GB Builds (Compare 13,482 builds) See popular component choices, score breakdowns and rankings.
Gaming 54%
Desktop 65%
Workstation 56%

Motherboard: Gigabyte B450M DS3H - $74

EDIT WITH CUSTOM PC BUILDER Value: 80% - Very good Total price: $485

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) August 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 18 months ago.

Disliked (edit your comment) Add link

7 days ago.

Info  graphicscardhub.com/...

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


11 days ago.

Tested both, this one was way better


5 months ago.

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


2 months ago.

Has a freezing problem and needs firmware updates.


6 months ago.

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


3 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 $143Nvidia GTX 1660 $220Samsung 850 Evo 250GB $86
Intel Core i5-9600K $219Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $102
AMD Ryzen 5 3600 $196AMD RX 580 $173Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $42G.SKILL Trident Z DDR4 3200 C14 4x16GB $799SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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