Average Bench: 64.1% (717th of 1037)

Based on 196,784 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 35.9% 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 85MB/s
Avg. 4K Random Read Speed 26.4MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 58.9%. This is a relatively wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 161MB/s
Avg. Sequential Mixed IO Speed 257MB/s

Average Bench

(Based on 196,784 samples)
Min Avg Max
290 Read 425 508
103 Write 319 445
19.1 Mixed 257 414
52 SusWrite 161 413
64.8% 291 MB/s
Min Avg Max
12 4K Read 26.4 36.2
7.12 4K Write 55.4 101
0.5 4K Mixed 21.8 40.6
97.3% 34.5 MB/s
Min Avg Max
42.4 DQ Read 180 268
10.5 DQ Write 203 343
1.1 DQ Mixed 85 200
93.6% 156 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: SBFKJ1A3
SusWrite @10s intervals: 161 196 266 98 171 154 MB/s
Read 423
Write 463
Mixed 390
SusWrite 174
81% 362 MB/s
4K Read 34.6
4K Write 94.3
4K Mixed 43
158% 57.3 MB/s
DQ Read 238
DQ Write 357
DQ Mixed 199
178% 265 MB/s
30GB free (System drive)
Firmware: SBFK61K1
SusWrite @10s intervals: 171 33 31 28 45 33 MB/s
Read 451
Write 132
Mixed 352
SusWrite 56.8
55% 248 MB/s
4K Read 34.8
4K Write 76
4K Mixed 36.5
140% 49.1 MB/s
DQ Read 276
DQ Write 318
DQ Mixed 67.3
114% 220 MB/s
178GB free (System drive)
Firmware: SBFKB1E1
SusWrite @10s intervals: 274 208 197 277 222 215 MB/s
Read 351
Write 119
Mixed 183
SusWrite 232
49% 221 MB/s
4K Read 26.8
4K Write 39.2
4K Mixed 23.5
92% 29.8 MB/s
DQ Read 44.1
DQ Write 47.3
DQ Mixed 42.6
33% 44.7 MB/s
59GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 399 85 64 59 47 99 MB/s
Read 488
Write 408
Mixed 28.7
SusWrite 126
58% 263 MB/s
4K Read 26.7
4K Write 15.3
4K Mixed 0.8
50% 14.3 MB/s
DQ Read 231
DQ Write 7.2
DQ Mixed 17.1
38% 85.2 MB/s
80GB free (System drive)
Firmware: S1Z40102
SusWrite @10s intervals: 345 49 28 31 60 57 MB/s
Read 509
Write 445
Mixed 27.8
SusWrite 95
59% 269 MB/s
4K Read 32.6
4K Write 17.4
4K Mixed 0.4
59% 16.8 MB/s
DQ Read 128
DQ Write 5.7
DQ Mixed 35.3
34% 56.2 MB/s
196,784 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,727,796 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $289 mins
OutletPCUS $328 months
EbayUS $3416 mins
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Typical A400 240GB Builds (Compare 32,404 builds) See popular component choices, score breakdowns and rankings.
Gaming 50%
Desktop 81%
Aircraft carrier
Workstation 46%

Motherboard: Gigabyte B450M DS3H - $73

EDIT WITH CUSTOM PC BUILDER Value: 84% - Excellent 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.

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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) September 2020 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.

Excellent (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.


1 month ago.

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


1 month 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.


19 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


10 months ago.

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


27 days ago.

Performs well on real SATA-3 interface and SATA AHCI mode and right manufacturer's drivers.


15 months ago.

Has a freezing problem and needs firmware updates.


9 months ago.

could have used some DRAM, stutters when booting.


19 months ago.

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


10 months ago.

Affordable and reliable!


4 months ago.

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


9 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.

1037 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.

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