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

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

Real World Speed
Performance profile from 11,631 user samples
595 User Benchmarks
Best Bench: 103% 148GB free
Worst Bench: 55% 41GB free
Poor: 55% Great: 103%
SPEED RANK: 159th / 862
11,036 User Benchmarks
Best Bench: 82% 50GB free
Worst Bench: 48% 34GB free
Poor: 48% Great: 82%
SPEED RANK: 412th / 862
Effective Speed
Effective SSD Speed
82.6 % Faster effective speed.
65.7 % -26%
Avg. Sequential Read Speed
495 MB/s Slightly faster read speed.
452 MB/s -10%
Avg. Sequential Write Speed
424 MB/s Much faster write speed.
249 MB/s -70%
4K Read
Avg. 4K Random Read Speed
28.8 MB/s +4% 27.6 MB/s -4%
4K Write
Avg. 4K Random Write Speed
73.9 MB/s Much faster random write.
51.5 MB/s -43%
Avg. Sequential Mixed IO Speed
450 MB/s Hugely faster mixed IO speed.
242 MB/s -86%
4K Mixed
Avg. 4K Random Mixed IO Speed
13.6 MB/s -8% 14.7 MB/s Slightly faster random mixed IO.
Peak Sequential Read Speed
528 MB/s Slightly faster peak read speed.
499 MB/s -6%
Peak Sequential Write Speed
509 MB/s Much faster peak write speed.
337 MB/s -51%
4K Read
Peak 4K Random Read Speed
37.8 MB/s Slightly faster peak random read.
35.9 MB/s -5%
4K Write
Peak 4K Random Write Speed
117 MB/s Much faster peak random write.
79.7 MB/s -47%
Peak Sequential Mixed IO Speed
515 MB/s Much faster peak mixed IO speed.
325 MB/s -58%
4K Mixed
Peak 4K Random Mixed IO Speed
16.1 MB/s -30% 21 MB/s Much faster peak random mixed IO.
Market Share
Based on 4,430,761 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.02 % -2,300% 0.48 % Insanely higher market share.
Value For Money
51.7 % -30% 67 % Better value.
User Rating
UBM User Rating
62 % -2% 63 % +2%
Price (score)
$170 -48% $88 Much cheaper.
35 Months Slightly more recent.
38 Months -8%
DQ Read
Peak 4K-64Thread Read Speed
361 MB/s +3% 352 MB/s -3%
DQ Write
Peak 4K-64Thread Write Speed
347 MB/s Much faster peak deep queue write.
208 MB/s -67%
AS-SSD Total
AS-SSD Total Score
1,210 Pts Stronger server IO.
988 Pts -23%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
62.7 MB/s Faster peak deep queue mixed IO.
51.3 MB/s -22%
ADQ Read
Avg. 4K-64Thread Read Speed
165 MB/s -4% 171 MB/s +4%
ADQ Write
Avg. 4K-64Thread Write Speed
206 MB/s Much faster deep queue write.
134 MB/s -54%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
21.6 MB/s -43% 30.9 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) November 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 $288Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $285AMD RX 480 $240Samsung 850 Pro 256GB $110
Intel Core i5-7600K $200Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $150
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $189SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $55Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
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