Average Bench: 64.3% (734th of 1058)

Based on 285,241 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 35.6% 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 92.7MB/s
Avg. 4K Random Read Speed 25.9MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 64.5%. This is a particularly wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 165MB/s
Avg. Sequential Mixed IO Speed 263MB/s

Average Bench

(Based on 285,241 samples)
Min Avg Max
282 Read 413 508
84.6 Write 298 444
24.1 Mixed 263 413
50.5 SusWrite 165 435
63.5% 285 MB/s
Min Avg Max
10.7 4K Read 25.9 35.6
7.32 4K Write 56.8 99.4
0.4 4K Mixed 22.8 42
98.6% 35.2 MB/s
Min Avg Max
34.2 DQ Read 180 268
11.9 DQ Write 201 348
0.6 DQ Mixed 92.7 203
96.8% 158 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
164GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 424 72 104 83 68 42 MB/s
Read 507
Write 431
Mixed 429
SusWrite 132
84% 375 MB/s
4K Read 34.9
4K Write 84.3
4K Mixed 1.2
99% 40.1 MB/s
DQ Read 215
DQ Write 20.1
DQ Mixed 44.5
51% 93.3 MB/s
285,241 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 41,717,257 SSDs tested.


MSRP ≈ $50 @ launch in Jan '17
OutletPCUS $3215 months
AmazonUS $352 mins
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Typical A400 240GB Builds (Compare 57,218 builds) See popular component choices, score breakdowns and rankings.
Gaming 47%
Desktop 81%
Aircraft carrier
Workstation 44%
Speed boat

Motherboard: Gigabyte B450M DS3H - $70

EDIT WITH CUSTOM PC BUILDER Value: 70% - Very good Total price: $586

Popular A400 240GB compatible motherboards:

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Solid State Drive Rankings (Price vs Performance) April 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.

Poor (edit your comment) Add link

1 month 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.


2 months ago.

died after 5 months of daily use.


2 months ago.

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


10 days ago.

Tested both, this one was way better


1 month ago.

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


18 days 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 months ago.

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


22 months ago.

Has a freezing problem and needs firmware updates.


16 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?


16 months ago.

Affordable and reliable!


10 months ago.

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


6 months ago.

With SATA-3 cables/controller/motherboard and in AHCI or Intel RST mode works just nice! Weight is really light and case is also very good and really thin.


15 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

 Best User Rated

The Best.
Intel Core i5-11400F $173Nvidia RTX 3070 $500Crucial MX500 250GB $49
Intel Core i5-11600K $265Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-10700K $316Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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