Average Bench: 52.3% (658th of 908)

Based on 3,146 user benchmarks.  Models: KINGSTON SA400S37240G, KINGSTON SA400S37240, KINGSTON SA400S3, KINGSTON SA400S37240G, KINGSTON KINGSTON SA400S3

Average average bench

The Kingston A400 240GB averaged 47.6% 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 23.1MB/s
Avg. Sequential Read Speed 388MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Kingston A400 240GB is 33.8%. 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 6.9MB/s
Avg. 4K Random Mixed IO Speed 5.25MB/s

Average Bench

(Based on 3,146 samples)
Min Avg Max
252 Read 388 495
42.9 Write 216 325
60.2 Mixed 271 344
64.4% 291 MB/s
Min Avg Max
11.7 4K Read 23.1 30.3
11.6 4K Write 44.2 67.1
1.44 4K Mixed 5.25 7.86
65.2% 24.2 MB/s
Min Avg Max
20 DQ Read 130 248
16.7 DQ Write 122 228
1.21 DQ Mixed 6.9 10.3
37.8% 86 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
75GB free
Firmware: SBFK71E0 Max speed: SATA 3.0 600 MB/s
Read 274
Write 323
Mixed 348
71% 315 MB/s
4K Read 27.7
4K Write 23.4
4K Mixed 4.1
60% 18.4 MB/s
DQ Read 242
DQ Write 201
DQ Mixed 9.82
65% 151 MB/s
193GB free
Firmware: SBFK71B1 Max speed: SATA 3.0 600 MB/s
Read 441
Write 252
Mixed 307
74% 333 MB/s
4K Read 18.2
4K Write 30.6
4K Mixed 5.5
51% 18.1 MB/s
DQ Read 79.6
DQ Write 48.7
DQ Mixed 9.58
22% 46 MB/s
47GB free
Firmware: SBFK71E0 Max speed: SATA 3.0 600 MB/s
Read 434
Write 55.7
Mixed 315
59% 268 MB/s
4K Read 23.5
4K Write 54.2
4K Mixed 3.11
68% 27 MB/s
DQ Read 28.9
DQ Write 59.7
DQ Mixed 5.7
15% 31.4 MB/s
89GB free
Firmware: SBFK71E0 Max speed: SATA 3.0 600 MB/s
Read 263
Write 44.4
Mixed 323
47% 210 MB/s
4K Read 22.2
4K Write 13.1
4K Mixed 6.42
49% 13.9 MB/s
DQ Read 229
DQ Write 28.9
DQ Mixed 10.3
38% 89.6 MB/s
3,146 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 5,993,412 SSDs tested.


Approx. $50 @ launch in Jan '17
AmazonUS $705 mins
EbayUS $708 mins
NeweggUS $703 hrs
OutletPCUS $781 day
Send price feedback
Typical A400 240GB Builds (Compare 1,884 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: 136% - Outstanding Total price: $476

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) March 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 17 days ago.
908 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.
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AMD Ryzen 5 1600 $189AMD RX 480 $400Samsung 850 Pro 256GB $140
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $198SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
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