Average Bench: 63.1% (659th of 992)

Based on 35,178 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 36.9% 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 93MB/s
Avg. 4K Random Read Speed 26.3MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 56.9%. This is a relatively wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 154MB/s
Avg. Sequential Mixed IO Speed 249MB/s

Average Bench

(Based on 35,178 samples)
Min Avg Max
269 Read 400 509
96.9 Write 281 441
16.9 Mixed 249 412
50.5 SusWrite 154 397
60.5% 271 MB/s
Min Avg Max
13.7 4K Read 26.3 36.6
8.14 4K Write 55.7 105
0.5 4K Mixed 22.1 39.6
97.7% 34.7 MB/s
Min Avg Max
22.5 DQ Read 188 301
8.59 DQ Write 202 336
1.2 DQ Mixed 93 211
98.1% 161 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
150GB free (System drive)
Firmware: SBFK61K1
SusWrite @10s intervals: 267 104 107 66 141 45 MB/s
Read 489
Write 370
Mixed 339
SusWrite 122
74% 330 MB/s
4K Read 40.2
4K Write 89.6
4K Mixed 41.9
162% 57.2 MB/s
DQ Read 281
DQ Write 312
DQ Mixed 209
182% 267 MB/s
165GB free (System drive)
Firmware: R0105A
SusWrite @10s intervals: 339 200 65 58 68 78 MB/s
Read 470
Write 410
Mixed 404
SusWrite 135
79% 355 MB/s
4K Read 26.1
4K Write 56.5
4K Mixed 26.4
103% 36.3 MB/s
DQ Read 235
DQ Write 329
DQ Mixed 1.3
79% 188 MB/s
27GB free (System drive)
Firmware: SBFK71E0
SusWrite @10s intervals: 201 59 105 6.9 12 12 MB/s
Read 393
Write 206
Mixed 300
SusWrite 65.7
53% 241 MB/s
4K Read 18.9
4K Write 65.6
4K Mixed 22.4
92% 35.6 MB/s
DQ Read 243
DQ Write 289
DQ Mixed 160
150% 231 MB/s
35,178 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 13,029,063 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $3031 mins
OutletPCUS $3223 days
EbayUS $3244 mins
NeweggUS $324 hrs
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Typical A400 240GB Builds (Compare 19,104 builds) See popular component choices, score breakdowns and rankings.
Gaming 72%
Desktop 84%
Aircraft carrier
Workstation 78%

Motherboard: MSI Z370-A PRO (MS-7B48) - $107

EDIT WITH CUSTOM PC BUILDER Value: 104% - Outstanding Total price: $842

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.

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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
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Solid State Drive Rankings (Price vs Performance) March 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 12 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.


1 day ago.

Tested both, this one was way better


30 days ago.

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

992 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.
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