Average Bench: 66.4% (705th of 1058)

Based on 307,480 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 33.5% 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 90.2MB/s
Avg. 4K Random Read Speed 26.5MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 66.1%. This is a particularly wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 192MB/s
Avg. Sequential Mixed IO Speed 269MB/s

Average Bench

(Based on 307,480 samples)
Min Avg Max
292 Read 418 510
89 Write 311 447
18.2 Mixed 269 420
54.7 SusWrite 192 441
66.4% 298 MB/s
Min Avg Max
12.5 4K Read 26.5 35.5
6.8 4K Write 57.3 106
0.5 4K Mixed 22.8 41.7
99.7% 35.5 MB/s
Min Avg Max
29.2 DQ Read 175 268
13.4 DQ Write 209 349
1.01 DQ Mixed 90.2 199
96.2% 158 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
175GB free (System drive)
Firmware: SBFK62A3
SusWrite @10s intervals: 356 172 185 168 286 197 MB/s
Read 293
Write 110
Mixed 258
SusWrite 227
50% 222 MB/s
4K Read 23.9
4K Write 64.2
4K Mixed 32.2
111% 40.1 MB/s
DQ Read 257
DQ Write 289
DQ Mixed 193
168% 246 MB/s
155GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 439 150 136 133 135 134 MB/s
Read 500
Write 450
Mixed 427
SusWrite 188
88% 391 MB/s
4K Read 33.5
4K Write 85.7
4K Mixed 1.2
98% 40.1 MB/s
DQ Read 235
DQ Write 20
DQ Mixed 0.5
32% 85.3 MB/s
307,480 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,245,213 SSDs tested.


MSRP ≈ $50 @ launch in Jan '17
AmazonUS $2925 mins
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Typical A400 240GB Builds (Compare 67,459 builds) See popular component choices, score breakdowns and rankings.
Gaming 47%
Desktop 81%
Aircraft carrier
Workstation 44%
Speed boat

Motherboard: Gigabyte B450M DS3H - $68

EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $591

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) September 2021 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 3 years ago.

Good (edit your comment) Add link

9 days ago.

Very good, fast and use it as a boot drive and for drivers on extra space.

Info  graphicscardhub.com/...

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


8 months ago.

died after 5 months of daily use.


7 months ago.

for the price and what it give for everyday use, its perfect in the laptop as replacement


5 months ago.

Tested both, this one was way better


2 months ago.

I had this as saily driver for almost 2 years and its excellent! recommend it!


1 month ago.

Lots of people complain about the lack of dram, but given the price in my region, this beats most competitors.


2 months ago.

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


6 months ago.

others test show me diferent result in ssd! need check this not in all pc gives a true result in ssd https://fotos.subefotos.com/2353da9eaf3f3e7eaea222619bbf0971o.jpg


2 years ago.

Has a freezing problem and needs firmware updates.


22 months ago.

could have used some DRAM, stutters when booting.


2 years ago.

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


2 months ago.

A great value for a boot drive. The only thing that holds it back is the lack of a DRAM cache, but for the price, it is an excellent choice. I know many people who use this drive; for all of them, it has not caused a single problem.


22 months ago.

Affordable and reliable!


16 months ago.

A pretty decent SSD for a faster boot drive on a budget.


5 months ago.

With SATA-3 cables/controller/motherboard and in AHCI or Intel RST mode works just nice! Weight is really light and the case is fully aluminium. Yeah, memory type of this SSD is MLC, but still performs very well.


21 months ago.

Quite slow speeds compared to it's other slightly more expensive competition. I can't recommend it. You get what you pay for I suppose.

1058 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

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