Average Bench: 62.9% (670th of 1000)

Based on 42,753 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 37.1% 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 26.9MB/s
Avg. 4K-64Thread Mixed IO Speed 74.8MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 60.6%. This is a particularly wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 153MB/s
Avg. Sequential Mixed IO Speed 261MB/s

Average Bench

(Based on 42,753 samples)
Min Avg Max
285 Read 417 510
102 Write 304 444
22.1 Mixed 261 425
52.1 SusWrite 153 426
63.2% 284 MB/s
Min Avg Max
14.4 4K Read 26.9 36.5
8.36 4K Write 54.8 102
0.5 4K Mixed 20.3 39
95.8% 34 MB/s
Min Avg Max
25.4 DQ Read 186 276
10.1 DQ Write 202 340
1.2 DQ Mixed 74.8 205
89.2% 154 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
135GB free (System drive)
Firmware: SBFKB1D2
SusWrite @10s intervals: 118 85 112 153 97 58 MB/s
Read 410
Write 370
Mixed 318
SusWrite 104
67% 300 MB/s
4K Read 31.9
4K Write 76.8
4K Mixed 37.4
137% 48.7 MB/s
DQ Read 222
DQ Write 310
DQ Mixed 144
143% 225 MB/s
127GB free (System drive)
Firmware: SBFK
SusWrite @10s intervals: 102 80 11 111 52 17 MB/s
Read 269
Write 99.5
Mixed 311
SusWrite 62.2
41% 185 MB/s
4K Read 23.7
4K Write 49.9
4K Mixed 25.4
95% 33 MB/s
DQ Read 231
DQ Write 316
DQ Mixed 168
156% 239 MB/s
42,753 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 14,373,882 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $307 mins
NeweggUS $302 days
EbayUS $3216 mins
OutletPCUS $3613 hrs
Send price feedback
Typical A400 240GB Builds (Compare 7,784 builds) See popular component choices, score breakdowns and rankings.
Gaming 68%
Battle cruiser
Desktop 72%
Workstation 68%
Battle cruiser

Motherboard: Gigabyte B450M DS3H - $66

EDIT WITH CUSTOM PC BUILDER Value: 124% - Outstanding Total price: $499

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.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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Solid State Drive Rankings (Price vs Performance) May 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 14 months ago.

Good (edit your comment) Add link

5 days ago.


Info  graphicscardhub.com/...

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


29 days ago.

love it!


26 days ago.

Tested both, this one was way better


1 month ago.

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


1 month ago.

GOOD one


2 months ago.

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


8 days ago.

minecraft has never loaded faster

1000 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 $356Nvidia GTX 1070 $314Samsung 850 Evo 250GB $92
AMD Ryzen 5 2600 $145Nvidia GTX 1060-6GB $208Samsung 850 Evo 500GB $99
AMD Ryzen 5 1600 $108Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $90SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $651SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $73Corsair Vengeance LPX DDR4 3200 C16 2x8GB $85SanDisk Ultra Fit 32GB $12
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