Average Bench: 58.1% (605th of 921)

Based on 27,117 user benchmarks.  Models: KINGSTON SUV400S37240G, KINGSTON SUV400S3724

Average average bench

The Kingston SSDNow UV400 240GB averaged 41.8% 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 25MB/s
Avg. Sequential Read Speed 459MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Kingston SSDNow UV400 240GB is 24.8%. This is a relatively narrow range which indicates that the Kingston SSDNow UV400 240GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 17.8MB/s
Avg. 4K Random Mixed IO Speed 9.57MB/s

Average Bench

(Based on 27,117 samples)
Min Avg Max
376 Read 459 483
171 Write 237 263
127 Mixed 221 264
67.1% 306 MB/s
Min Avg Max
15.8 4K Read 25 33.1
18.8 4K Write 37.4 54.8
5.22 4K Mixed 9.57 12.8
69.9% 24 MB/s
Min Avg Max
20.5 DQ Read 145 299
28.6 DQ Write 93.3 153
4.89 DQ Mixed 17.8 30.8
40.6% 85.5 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
134GB free
Firmware: 0C3G37R5 Max speed: SATA 3.0 600 MB/s
Read 466
Write 226
Mixed 244
69% 312 MB/s
4K Read 26.5
4K Write 42.1
4K Mixed 11.9
78% 26.9 MB/s
DQ Read 249
DQ Write 124
DQ Mixed 27.3
63% 134 MB/s
152GB free
Firmware: 0C3G37R5 Max speed: SATA 3.0 600 MB/s
Read 473
Write 220
Mixed 190
64% 294 MB/s
4K Read 28.1
4K Write 38.2
4K Mixed 11.2
77% 25.8 MB/s
DQ Read 210
DQ Write 109
DQ Mixed 30.9
57% 117 MB/s
146GB free
Firmware: 0C3FD6SD Max speed: SATA 3.0 600 MB/s
Read 451
Write 247
Mixed 256
70% 318 MB/s
4K Read 21
4K Write 23.6
4K Mixed 8.02
55% 17.5 MB/s
DQ Read 289
DQ Write 141
DQ Mixed 3.94
59% 145 MB/s
168GB free
Firmware: 20150818 Max speed: SATA 3.0 600 MB/s
Read 286
Write 83.4
Mixed 87.1
33% 152 MB/s
4K Read 13.2
4K Write 23.7
4K Mixed 1.4
34% 12.8 MB/s
DQ Read 87.4
DQ Write 79.4
DQ Mixed 8.59
27% 58.5 MB/s
27,117 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,418,245 SSDs tested.


EbayUS $815 mins
AmazonUS $8721 mins
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Typical SSDNow UV400 240GB Builds (Compare 19,496 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 77%
Workstation 61%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 81% - Excellent Total price: $1,233

Popular SSDNow UV400 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) April 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.


921 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 $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $80
AMD Ryzen 5 1600 $170Nvidia GTX 1060-6GB $310Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $350Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $45
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $204SanDisk Ultra Fit 32GB $12
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