Average Bench: 67.3% (559th of 964)

Based on 15,175 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Above average average bench

The Kingston A400 240GB averaged 32.7% 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 88.1MB/s
Avg. 4K Random Read Speed 26.7MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 60%. This is a relatively wide range which indicates that the Kingston A400 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 169MB/s
Avg. Sequential Mixed IO Speed 273MB/s

Average Bench

(Based on 15,175 samples)
Min Avg Max
287 Read 406 506
102 Write 291 448
27.2 Mixed 273 422
40.7 SusWrite 169 429
63.5% 285 MB/s
Min Avg Max
13.4 4K Read 26.7 36.5
12.9 4K Write 61.9 107
0.8 4K Mixed 24.1 40.8
104% 37.5 MB/s
Min Avg Max
41.4 DQ Read 205 273
16.7 DQ Write 223 340
1.11 DQ Mixed 88.1 210
101% 172 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
116GB free (System drive)
Firmware: SBFK61E1
SusWrite @10s intervals: 265 190 72 64 79 56 MB/s
Read 229
Write 383
Mixed 239
SusWrite 121
55% 243 MB/s
4K Read 33.6
4K Write 82.9
4K Mixed 27.8
130% 48.1 MB/s
DQ Read 281
DQ Write 324
DQ Mixed 207
182% 271 MB/s
143GB free (System drive)
Firmware: R0105A
SusWrite @10s intervals: 299 93 82 107 63 109 MB/s
Read 433
Write 393
Mixed 27.5
SusWrite 126
54% 245 MB/s
4K Read 15.5
4K Write 12
4K Mixed 0.5
30% 9.33 MB/s
DQ Read 54.4
DQ Write 281
DQ Mixed 1.3
50% 112 MB/s
15,175 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,690,586 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $3910 mins
NeweggUS $393 days
EbayUS $4220 mins
OutletPCUS $4823 hrs
Send price feedback
Typical A400 240GB Builds (Compare 12,203 builds) See popular component choices, score breakdowns and rankings.
Gaming 73%
Desktop 85%
Aircraft carrier
Workstation 79%

Motherboard: MSI Z370-A PRO (MS-7B48) - $90

EDIT WITH CUSTOM PC BUILDER Value: 100% - Outstanding Total price: $848

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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - 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.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) November 2018 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 8 months ago.

Terrible (edit your comment) Add link

3 days ago.

Info  graphicscardhub.com/...

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


12 days ago.

Tested both, this one was way better

964 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 $359Nvidia GTX 1070 $340Samsung 850 Evo 250GB $77
AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $234Samsung 850 Evo 500GB $100
Intel Core i5-8600K $237AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback