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


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

Real World Speed
Performance profile from 5,461 user samples
4,822 User Benchmarks
Best Bench: 107% 200GB free
Worst Bench: 62% 77GB free
Poor: 62% Great: 107%
SPEED RANK: 102nd / 873
639 User Benchmarks
Best Bench: 103% 89GB free
Worst Bench: 55% 198GB free
Poor: 55% Great: 103%
SPEED RANK: 175th / 873
Effective Speed
Effective SSD Speed
88.9 % Slightly faster effective speed.
81.9 % -9%
Avg. Sequential Read Speed
488 MB/s -1% 494 MB/s +1%
Avg. Sequential Write Speed
423 MB/s +0% 421 MB/s -0%
4K Read
Avg. 4K Random Read Speed
29.2 MB/s +3% 28.4 MB/s -3%
4K Write
Avg. 4K Random Write Speed
79.4 MB/s Slightly faster random write.
72.3 MB/s -10%
Avg. Sequential Mixed IO Speed
424 MB/s -5% 446 MB/s Slightly faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
23.2 MB/s Much faster random mixed IO.
13.5 MB/s -72%
Peak Sequential Read Speed
516 MB/s -2% 527 MB/s +2%
Peak Sequential Write Speed
496 MB/s -3% 509 MB/s +3%
4K Read
Peak 4K Random Read Speed
35.7 MB/s -3% 36.9 MB/s +3%
4K Write
Peak 4K Random Write Speed
116 MB/s +1% 115 MB/s -1%
Peak Sequential Mixed IO Speed
487 MB/s -6% 514 MB/s Slightly faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
30.2 MB/s Hugely faster peak random mixed IO.
16 MB/s -89%
Market Share
Based on 5,201,195 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.17 % Hugely higher market share.
0.02 % -750%
Value For Money
79.8 % Much better value.
51.2 % -56%
User Rating
UBM User Rating
64 % +3% 62 % -3%
Price (score)
$105 Much cheaper.
$170 -38%
43 Months -14% 37 Months Slightly more recent.
DQ Read
Peak 4K-64Thread Read Speed
364 MB/s +1% 360 MB/s -1%
DQ Write
Peak 4K-64Thread Write Speed
324 MB/s -6% 344 MB/s Slightly faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
1,183 Pts -2% 1,202 Pts +2%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.4 MB/s +3% 63.4 MB/s -3%
ADQ Read
Avg. 4K-64Thread Read Speed
203 MB/s Faster deep queue read.
162 MB/s -25%
ADQ Write
Avg. 4K-64Thread Write Speed
209 MB/s +3% 203 MB/s -3%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
44.9 MB/s Hugely faster deep queue mixed IO.
21.8 MB/s -106%
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) 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

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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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