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

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

Real World Speed
Performance profile from 4,185 user samples
595 User Benchmarks
Best Bench: 103% 148GB free
Worst Bench: 55% 41GB free
Poor: 55% Great: 103%
SPEED RANK: 159th / 862
3,590 User Benchmarks
Best Bench: 105% 101GB free
Worst Bench: 66% 160GB free
Poor: 66% Great: 105%
SPEED RANK: 108th / 862
Effective Speed
Effective SSD Speed
82.6 % -6% 87.2 % Slightly faster effective speed.
Avg. Sequential Read Speed
495 MB/s +0% 494 MB/s -0%
Avg. Sequential Write Speed
424 MB/s 0% 424 MB/s 0%
4K Read
Avg. 4K Random Read Speed
28.8 MB/s -3% 29.6 MB/s +3%
4K Write
Avg. 4K Random Write Speed
73.9 MB/s -8% 79.5 MB/s Slightly faster random write.
Avg. Sequential Mixed IO Speed
450 MB/s Slightly faster mixed IO speed.
423 MB/s -6%
4K Mixed
Avg. 4K Random Mixed IO Speed
13.6 MB/s -55% 21.1 MB/s Much faster random mixed IO.
Peak Sequential Read Speed
528 MB/s +2% 516 MB/s -2%
Peak Sequential Write Speed
509 MB/s +3% 493 MB/s -3%
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 +1% 116 MB/s -1%
Peak Sequential Mixed IO Speed
515 MB/s Slightly faster peak mixed IO speed.
485 MB/s -6%
4K Mixed
Peak 4K Random Mixed IO Speed
16.1 MB/s -81% 29.1 MB/s Hugely faster peak random mixed IO.
Market Share
Based on 4,430,761 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.02 % -750% 0.17 % Hugely higher market share.
Value For Money
51.7 % -52% 78.3 % Much better value.
User Rating
UBM User Rating
62 % -3% 64 % +3%
Price (score)
$170 -38% $105 Much cheaper.
35 Months Slightly more recent.
41 Months -15%
DQ Read
Peak 4K-64Thread Read Speed
361 MB/s 0% 361 MB/s 0%
DQ Write
Peak 4K-64Thread Write Speed
347 MB/s Slightly faster peak deep queue write.
324 MB/s -7%
AS-SSD Total
AS-SSD Total Score
1,210 Pts +3% 1,179 Pts -3%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
62.7 MB/s -4% 65.3 MB/s +4%
ADQ Read
Avg. 4K-64Thread Read Speed
165 MB/s -5% 173 MB/s +5%
ADQ Write
Avg. 4K-64Thread Write Speed
206 MB/s Slightly faster deep queue write.
188 MB/s -10%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
21.6 MB/s -81% 39.2 MB/s Hugely faster deep queue mixed IO.
240GB 240GB

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '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

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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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