WDWDS256G1X0C
KingstonSA400S37/240G

Release date ≈ Q1 2017.

Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC. Release date: Q1 2017.

Real World Speed
Performance profile from 37,507 user samples
9,928 User Benchmarks
Best Bench: 142% 175GB free (System drive)
Worst Bench: 89% 24GB free (System drive)
Poor: 89% Great: 142%
SPEED RANK: 126th / 991
27,579 User Benchmarks
Best Bench: 91% 223GB free
Worst Bench: 38% 70GB free (System drive)
Poor: 38% Great: 91%
SPEED RANK: 617th / 991
Effective Speed
Effective SSD Speed
124 % Hugely faster effective speed.
+89%
65.6 %
Read
Avg. Sequential Read Speed
902 MB/s Hugely faster read speed.
+121%
409 MB/s
Write
Avg. Sequential Write Speed
488 MB/s Much faster write speed.
+69%
289 MB/s
4K Read
Avg. 4K Random Read Speed
38.4 MB/s Much faster random read.
+40%
27.4 MB/s
4K Write
Avg. 4K Random Write Speed
102 MB/s Much faster random write.
+76%
58.1 MB/s
Mixed
Avg. Sequential Mixed IO Speed
374 MB/s Much faster mixed IO speed.
+42%
264 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
46.1 MB/s Hugely faster random mixed IO.
+99%
23.2 MB/s
SusWrite
Avg. Sustained Write Speed
184 MB/s Faster sustained write speed.
+19%
154 MB/s
Read
Peak Sequential Read Speed
1086 MB/s Hugely faster peak read speed.
+114%
508 MB/s
Write
Peak Sequential Write Speed
680 MB/s Much faster peak write speed.
+53%
444 MB/s
4K Read
Peak 4K Random Read Speed
44.2 MB/s Faster peak random read.
+21%
36.4 MB/s
4K Write
Peak 4K Random Write Speed
131 MB/s Faster peak random write.
+24%
106 MB/s
Mixed
Peak Sequential Mixed IO Speed
569 MB/s Much faster peak mixed IO speed.
+36%
418 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
58.1 MB/s Much faster peak random mixed IO.
+46%
39.8 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
222 MB/s 384 MB/s Much faster peak sustained write speed.
+73%
Market Share
Based on 12,089,043 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.14 % 2.65 % Insanely higher market share.
+1,793%
Value
Value For Money
149 % 151 % +1%
User Rating
UBM User Rating
55 % 57 % +4%
Price
Price (score)
$76 $30 Much cheaper.
+61%
Age
Newest
24+ Months +4% 25 Months
DQ Read
Peak 4K-64Thread Read Speed
664 MB/s Hugely faster peak deep queue read.
+128%
291 MB/s
DQ Write
Peak 4K-64Thread Write Speed
525 MB/s Much faster peak deep queue write.
+55%
339 MB/s
AS-SSD Total
AS-SSD Total Score
1951 Pts Hugely stronger server IO.
+82%
1,072 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
395 MB/s Hugely faster peak deep queue mixed IO.
+87%
211 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
606 MB/s Hugely faster deep queue read.
+193%
207 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
478 MB/s Hugely faster deep queue write.
+115%
222 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
336 MB/s Hugely faster deep queue mixed IO.
+229%
102 MB/s
Capacity
Capacity
256GB 240GB
Solid State Drive Rankings (Price vs Performance) February 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]

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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.
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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $360Nvidia GTX 1070 $336Samsung 850 Evo 250GB $78
AMD Ryzen 5 1600 $149Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $90
Intel Core i5-8600K $259Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $750SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $126SanDisk Ultra Fit 32GB $12
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