Average Bench: 52.7% (687th of 927)

Based on 5,507 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Average average bench

The Kingston A400 240GB averaged 47.3% 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 23.2MB/s
Avg. Sequential Read Speed 384MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 33.3%. This is a relatively narrow range which indicates that the Kingston A400 240GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 6.94MB/s
Avg. 4K Random Mixed IO Speed 5.55MB/s

Average Bench

(Based on 5,507 samples)
Min Avg Max
247 Read 384 498
43.2 Write 222 323
66.3 Mixed 276 340
65.1% 294 MB/s
Min Avg Max
10.4 4K Read 23.2 30.4
11.6 4K Write 44.5 67.6
2.92 4K Mixed 5.55 8.42
65.8% 24.4 MB/s
Min Avg Max
21.1 DQ Read 124 244
17 DQ Write 122 225
1.16 DQ Mixed 6.94 11.1
37.1% 84.2 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
35GB free
Firmware: SBFK71B1 Max speed: SATA 3.0 600 MB/s
Read 307
Write 258
Mixed 296
64% 287 MB/s
4K Read 27.2
4K Write 47.7
4K Mixed 4.26
72% 26.4 MB/s
DQ Read 189
DQ Write 166
DQ Mixed 8.12
52% 121 MB/s
189GB free
Firmware: SBFK71B1 Max speed: SATA 3.0 600 MB/s
Read 260
Write 262
Mixed 301
61% 274 MB/s
4K Read 25.5
4K Write 48.5
4K Mixed 5.44
71% 26.5 MB/s
DQ Read 167
DQ Write 111
DQ Mixed 8.46
42% 95.5 MB/s
120GB free
Firmware: SBFK71B1 Max speed: SATA 3.0 600 MB/s
Read 478
Write 257
Mixed 299
76% 345 MB/s
4K Read 18.4
4K Write 35
4K Mixed 0.5
47% 17.9 MB/s
DQ Read 11.9
DQ Write 41.4
DQ Mixed 3.25
9% 18.9 MB/s
168GB free
Firmware: SBFK71E0 Max speed: SATA 3.0 600 MB/s
Read 477
Write 36.3
Mixed 70.1
41% 194 MB/s
4K Read 28.3
4K Write 3.07
4K Mixed 2.52
48% 11.3 MB/s
5,507 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,774,951 SSDs tested.


Approx. $50 @ launch in Jan '17
EbayUS $6510 mins
AmazonUS $656 mins
NeweggUS $708 hrs
OutletPCUS $781 day
Send price feedback
Typical A400 240GB Builds (Compare 2,139 builds) See popular component choices, score breakdowns and rankings.
Gaming 106%
Desktop 83%
Aircraft carrier
Workstation 68%
Battle cruiser

Motherboard: MSI Z270 PC MATE (MS-7A72)

EDIT WITH CUSTOM PC BUILDER Value: 95% - Outstanding Total price: $895

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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) May 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC.

Dramatically improves the responsiveness of your system....

Added 2 months ago.
927 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.
AMD Ryzen 5 1600 $169Nvidia GTX 1070 $447Samsung 850 Evo 250GB $100
Intel Core i7-8700K $325Nvidia GTX 1060-6GB $295Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $330Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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