Average Bench: 66.1% (638th of 1003)

Based on 62,462 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 33.9% 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 Random Read Speed 27.8MB/s
Avg. 4K-64Thread Mixed IO Speed 85.7MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 62.4%. This is a particularly wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 163MB/s
Avg. Sequential Mixed IO Speed 270MB/s

Average Bench

(Based on 62,462 samples)
Min Avg Max
291 Read 426 511
96 Write 314 447
16.9 Mixed 270 425
61 SusWrite 163 428
65.3% 293 MB/s
Min Avg Max
14.9 4K Read 27.8 36.5
9.03 4K Write 60.5 111
0.5 4K Mixed 21.7 39.3
102% 36.7 MB/s
Min Avg Max
30.2 DQ Read 195 285
13.9 DQ Write 213 340
1.1 DQ Mixed 85.7 209
97.3% 165 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
158GB free
Firmware: SBFKB1D1
SusWrite @10s intervals: 294 219 209 204 202 206 MB/s
Read 404
Write 368
Mixed 347
SusWrite 222
75% 335 MB/s
4K Read 35.5
4K Write 84.3
4K Mixed 43.5
154% 54.4 MB/s
DQ Read 268
DQ Write 326
DQ Mixed 209
182% 268 MB/s
67GB free
Firmware: SBFKB1D2
SusWrite @10s intervals: 249 155 170 160 240 227 MB/s
Read 371
Write 125
Mixed 348
SusWrite 200
58% 261 MB/s
4K Read 27.3
4K Write 77
4K Mixed 34.7
127% 46.3 MB/s
DQ Read 230
DQ Write 336
DQ Mixed 170
160% 245 MB/s
147GB free (System drive)
Firmware: 5A
SusWrite @10s intervals: 166 271 9.2 70 22 74 MB/s
Read 396
Write 340
Mixed 16.7
SusWrite 102
47% 214 MB/s
4K Read 21.5
4K Write 8.7
4K Mixed 0.4
38% 10.2 MB/s
DQ Read 246
DQ Write 171
DQ Mixed 1.2
57% 140 MB/s
62,462 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 15,729,423 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $2819 mins
EbayUS $3030 mins
OutletPCUS $327 hrs
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Typical A400 240GB Builds (Compare 10,698 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 72%
Workstation 68%
Battle cruiser

Motherboard: Gigabyte B450M DS3H - $77

EDIT WITH CUSTOM PC BUILDER Value: 133% - Outstanding Total price: $473

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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How it works

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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) July 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 16 months ago.

Liked (edit your comment) Add link

19 days ago.

Info  graphicscardhub.com/...

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


2 hrs ago.

Tested both, this one was way better


3 months ago.

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


1 month ago.

Has a freezing problem and needs firmware updates.


4 months ago.

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


2 months ago.

minecraft has never loaded faster

1003 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 i7-8700K $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $120Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $222Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $607SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $77SanDisk Ultra Fit 32GB $12
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