Controller: Phison PS3110-S10. NAND Flash: Toshiba 19nm MLC.

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC.

Real World Speed
Performance profile from 13,820 user samples
639 User Benchmarks
Best Bench: 103% 89GB free
Worst Bench: 55% 198GB free
Poor: 55% Great: 103%
SPEED RANK: 175th / 873
13,181 User Benchmarks
Best Bench: 82% 151GB free
Worst Bench: 46% 42GB free
Poor: 46% Great: 82%
SPEED RANK: 435th / 873
Effective Speed
Effective SSD Speed
81.9 % Faster effective speed.
64.8 % -26%
Avg. Sequential Read Speed
494 MB/s Slightly faster read speed.
454 MB/s -9%
Avg. Sequential Write Speed
421 MB/s Much faster write speed.
239 MB/s -76%
4K Read
Avg. 4K Random Read Speed
28.4 MB/s Slightly faster random read.
27 MB/s -5%
4K Write
Avg. 4K Random Write Speed
72.3 MB/s Much faster random write.
49.6 MB/s -46%
Avg. Sequential Mixed IO Speed
446 MB/s Hugely faster mixed IO speed.
236 MB/s -89%
4K Mixed
Avg. 4K Random Mixed IO Speed
13.5 MB/s -8% 14.6 MB/s Slightly faster random mixed IO.
Peak Sequential Read Speed
527 MB/s Slightly faster peak read speed.
497 MB/s -6%
Peak Sequential Write Speed
509 MB/s Much faster peak write speed.
339 MB/s -50%
4K Read
Peak 4K Random Read Speed
36.9 MB/s +2% 36.2 MB/s -2%
4K Write
Peak 4K Random Write Speed
115 MB/s Much faster peak random write.
78.9 MB/s -46%
Peak Sequential Mixed IO Speed
514 MB/s Much faster peak mixed IO speed.
327 MB/s -57%
4K Mixed
Peak 4K Random Mixed IO Speed
16 MB/s -31% 21 MB/s Much faster peak random mixed IO.
Market Share
Based on 5,201,195 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.02 % -2,300% 0.48 % Insanely higher market share.
Value For Money
51.2 % -46% 74.9 % Much better value.
User Rating
UBM User Rating
62 % -2% 63 % +2%
Price (score)
$170 -56% $75 Much cheaper.
37 Months Slightly more recent.
40 Months -8%
DQ Read
Peak 4K-64Thread Read Speed
360 MB/s +0% 359 MB/s -0%
DQ Write
Peak 4K-64Thread Write Speed
344 MB/s Much faster peak deep queue write.
208 MB/s -65%
AS-SSD Total
AS-SSD Total Score
1,202 Pts Stronger server IO.
998 Pts -20%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
63.4 MB/s Faster peak deep queue mixed IO.
51 MB/s -24%
ADQ Read
Avg. 4K-64Thread Read Speed
162 MB/s -13% 183 MB/s Slightly faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
203 MB/s Much faster deep queue write.
132 MB/s -54%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
21.8 MB/s -46% 31.8 MB/s Much faster deep queue mixed IO.
240GB 240GB

The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) January 2018 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 $280Nvidia GTX 1070 $430Samsung 850 Evo 250GB $87
AMD Ryzen 7 1700 $270Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $65
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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