Average Bench: 67.5% (670th of 1040)

Based on 247,548 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 32.5% 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 92.6MB/s
Avg. 4K Random Read Speed 27.2MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 66.9%. This is a particularly wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 181MB/s
Avg. Sequential Mixed IO Speed 266MB/s

Average Bench

(Based on 247,548 samples)
Min Avg Max
295 Read 422 511
96.1 Write 317 448
17.7 Mixed 266 421
55.6 SusWrite 181 445
66.1% 296 MB/s
Min Avg Max
13.3 4K Read 27.2 36.5
8.7 4K Write 59.9 108
0.5 4K Mixed 23.3 41.1
103% 36.8 MB/s
Min Avg Max
34 DQ Read 193 271
9.55 DQ Write 213 347
0.6 DQ Mixed 92.6 202
100% 166 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
157GB free (System drive)
Firmware: J4.3
SusWrite @10s intervals: 307 359 394 404 404 403 MB/s
Read 307
Write 381
Mixed 344
SusWrite 379
80% 353 MB/s
4K Read 31.3
4K Write 85.4
4K Mixed 41.1
145% 52.6 MB/s
DQ Read 239
DQ Write 345
DQ Mixed 199
176% 261 MB/s
125GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 319 61 61 106 51 85 MB/s
Read 476
Write 425
Mixed 28.1
SusWrite 114
58% 261 MB/s
4K Read 25.7
4K Write 16.7
4K Mixed 9.4
60% 17.3 MB/s
DQ Read 211
DQ Write 346
DQ Mixed 1.3
79% 186 MB/s
193GB free (System drive)
Firmware: 03170007
SusWrite @10s intervals: 78 73 72 73 74 69 MB/s
Read 437
Write 78.7
Mixed 133
SusWrite 73
39% 180 MB/s
4K Read 31.2
4K Write 57.2
4K Mixed 3.1
82% 30.5 MB/s
DQ Read 18.9
DQ Write 61.8
DQ Mixed 50.1
36% 43.6 MB/s
247,548 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 38,350,840 SSDs tested.


MSRP ≈ $50 @ launch in Jan '17
AmazonUS $2821 mins
OutletPCUS $3212 months
EbayUS $351 min
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Typical A400 240GB Builds (Compare 50,630 builds) See popular component choices, score breakdowns and rankings.
Gaming 49%
Desktop 81%
Aircraft carrier
Workstation 45%

Motherboard: Gigabyte B450M DS3H - $73

EDIT WITH CUSTOM PC BUILDER Value: 72% - Very good Total price: $584

Popular A400 240GB compatible motherboards:

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Solid State Drive Rankings (Price vs Performance) January 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 2 years ago.

Good (edit your comment) Add link

6 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.


1 day ago.

died after 5 months of daily use.


34 mins 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


8 days ago.

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


2 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


3 days ago.

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


20 months ago.

Has a freezing problem and needs firmware updates.


14 months ago.

could have used some DRAM, stutters when booting.


23 months ago.

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


14 months ago.

Affordable and reliable!


8 months ago.

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


3 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.


13 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.

1040 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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Intel Core i5-10600K $257Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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