Real World Speed
Performance profile from 633 user samples
633 User Benchmarks
Best Bench: 101% 98GB free
Worst Bench: 60% 35GB free
Poor: 60% Great: 101%
SPEED RANK: 158th / 850
Effective Speed
Effective SSD Speed
82.2 % -5% 86 % +5%
Avg. Sequential Read Speed
453 MB/s -9% 495 MB/s Slightly faster read speed.
Avg. Sequential Write Speed
371 MB/s -2% 377 MB/s +2%
4K Read
Avg. 4K Random Read Speed
28 MB/s -7% 29.9 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
82 MB/s Slightly faster random write.
76.8 MB/s -7%
Avg. Sequential Mixed IO Speed
371 MB/s -7% 398 MB/s Slightly faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
20.8 MB/s -17% 24.4 MB/s Faster random mixed IO.
Peak Sequential Read Speed
485 MB/s -8% 521 MB/s Slightly faster peak read speed.
Peak Sequential Write Speed
472 MB/s Slightly faster peak write speed.
429 MB/s -10%
4K Read
Peak 4K Random Read Speed
35.4 MB/s -5% 37 MB/s +5%
4K Write
Peak 4K Random Write Speed
119 MB/s Slightly faster peak random write.
112 MB/s -7%
Peak Sequential Mixed IO Speed
454 MB/s +1% 449 MB/s -1%
4K Mixed
Peak 4K Random Mixed IO Speed
28.4 MB/s -19% 33.8 MB/s Faster peak random mixed IO.
Market Share
Based on 3,046,212 SSDs tested.
User Rating
UBM User Rating
62 % -18% 73 % More popular.
Market Share
Market Share (trailing 30 days)
0.04 % -4,294% 1.76 % Insanely higher market share.
Price (score)
$105 Cheaper.
135 USD -29%
Value For Money
73.8 % Slightly better value.
68.5 % -8%
DQ Read
Peak 4K-64Thread Read Speed
358 MB/s Slightly faster peak deep queue read.
340 MB/s -5%
DQ Write
Peak 4K-64Thread Write Speed
300 MB/s -1% 304 MB/s +1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
67.3 MB/s -28% 86.2 MB/s Faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
177 MB/s -2% 181 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed
196 MB/s +1% 194 MB/s -1%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
41.5 MB/s -20% 49.7 MB/s Faster deep queue mixed IO.
49 Months -36% 36 Months Much more recent.
AS-SSD Total
AS-SSD Total Score
1,146 Pts +3% 1,116 Pts -3%
240GB   —

The Sandisk Extreme II uses the 88SS9187-BLD2 controller, Marvel's latest, and Sandisk's own 19MM MLC Memory. On paper this makes an extremely good combination and the benchmarks agree. The Extreme II scored an impressive 1143 in the server orientated AS SSD Benchmark putting it amongst the more capable server drives. In terms of real world consumer performance the Extreme II also fared well achieving a real world speed index score of 570.5 MB/s, amongst the top three scores we have seen to date. The Extreme II has everything going for it apart from its price which is currently significantly above average and hurting its value rating. Because the Extreme is the newest SSD we have in our group test we expect prices will drop with time. Until then, however, there is better value to be had elsewhere. [Jun '13 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) June 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

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The Best.
Intel Core i7-7700K $309Nvidia GTX 1070 $390Samsung 850 Evo 250GB $100
Intel Core i5-7600K $231AMD RX 480 $608Samsung 850 Pro 256GB $138
AMD Ryzen 7 1700 $280Nvidia GTX 1060-6GB $247Samsung 850 Evo 500GB $167
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $696SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $40HyperX Fury DDR4 2133 C14 2x8GB $133SanDisk Ultra Fit 32GB $13
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