Group Average(9 Highest-Voted)
Real World Speed
Performance profile from 16,248 user samples
16,248 User Benchmarks
Best Bench: 123% 169GB free
Worst Bench: 70% 118GB free
Poor: 70% Great: 123%
SPEED RANK: 48th / 848
Effective Speed
Effective SSD Speed
99.8 % Faster effective speed.
84.5 % -18%
Avg. Sequential Read Speed
504 MB/s +4% 485 MB/s -4%
Avg. Sequential Write Speed
447 MB/s Faster write speed.
379 MB/s -18%
4K Read
Avg. 4K Random Read Speed
32.8 MB/s Faster random read.
28.5 MB/s -15%
4K Write
Avg. 4K Random Write Speed
90 MB/s Faster random write.
77.1 MB/s -17%
Avg. Sequential Mixed IO Speed
465 MB/s Faster mixed IO speed.
393 MB/s -18%
4K Mixed
Avg. 4K Random Mixed IO Speed
34.1 MB/s Much faster random mixed IO.
23.2 MB/s -47%
Peak Sequential Read Speed
529 MB/s +3% 514 MB/s -3%
Peak Sequential Write Speed
502 MB/s Slightly faster peak write speed.
438 MB/s -14%
4K Read
Peak 4K Random Read Speed
42.6 MB/s Faster peak random read.
36 MB/s -18%
4K Write
Peak 4K Random Write Speed
129 MB/s Slightly faster peak random write.
114 MB/s -14%
Peak Sequential Mixed IO Speed
514 MB/s Slightly faster peak mixed IO speed.
450 MB/s -14%
4K Mixed
Peak 4K Random Mixed IO Speed
49.7 MB/s Much faster peak random mixed IO.
32.6 MB/s -53%
Market Share
Based on 2,574,185 SSDs tested.
User Rating
UBM User Rating
96 % Much more popular.
72.9 % -32%
Market Share
Market Share (trailing 30 days)
1.4 % -9% 1.52 % Slightly higher market share.
Price (score)
$140 -8% 129 USD Slightly cheaper.
Value For Money
75.8 % Slightly better value.
69.8 % -9%
DQ Read
Peak 4K-64Thread Read Speed
383 MB/s Slightly faster peak deep queue read.
334 MB/s -15%
DQ Write
Peak 4K-64Thread Write Speed
343 MB/s Slightly faster peak deep queue write.
304 MB/s -13%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
164 MB/s Hugely faster peak deep queue mixed IO.
80.9 MB/s -103%
ADQ Read
Avg. 4K-64Thread Read Speed
204 MB/s Faster deep queue read.
172 MB/s -19%
ADQ Write
Avg. 4K-64Thread Write Speed
226 MB/s Faster deep queue write.
192 MB/s -18%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
87.9 MB/s Hugely faster deep queue mixed IO.
46.1 MB/s -91%
33 Months -2% 32.3 Months +2%
AS-SSD Total
AS-SSD Total Score
1,260 Pts Slightly stronger server IO.
1,108 Pts -14%
256GB   —

The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) April 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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
  • - 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.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-7700K $310Nvidia GTX 1070 $330Samsung 850 Evo 250GB $106
Intel Pentium G4560 $60AMD RX 480 $220Samsung 850 Pro 256GB $140
Intel Core i5-7600K $229Nvidia GTX 1060-6GB $219Samsung 850 Evo 500GB $170
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 32GB $22
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 64GB $35
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $115SanDisk Ultra Fit 32GB $9
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