Group Average(9 Highest-Voted)
Real World Speed
Performance profile from 4,140 user samples
4,140 User Benchmarks
Best Bench: 106% 197GB free
Worst Bench: 56% 223GB free
Poor: 56% Great: 106%
SPEED RANK: 175th / 911
Effective Speed
Effective SSD Speed
83.2 % +1% 82.3 %
Avg. Sequential Read Speed
472 MB/s 488 MB/s +3%
Avg. Sequential Write Speed
414 MB/s Slightly faster write speed.
366 MB/s
4K Read
Avg. 4K Random Read Speed
27.4 MB/s 28.5 MB/s +4%
4K Write
Avg. 4K Random Write Speed
69.6 MB/s 70 MB/s +1%
Avg. Sequential Mixed IO Speed
410 MB/s Slightly faster mixed IO speed.
380 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
21.2 MB/s 23.4 MB/s Slightly faster random mixed IO.
Peak Sequential Read Speed
515 MB/s 516 MB/s +0%
Peak Sequential Write Speed
495 MB/s Faster peak write speed.
414 MB/s
4K Read
Peak 4K Random Read Speed
35.4 MB/s 35.9 MB/s +1%
4K Write
Peak 4K Random Write Speed
110 MB/s Slightly faster peak random write.
101 MB/s
Peak Sequential Mixed IO Speed
484 MB/s Slightly faster peak mixed IO speed.
426 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
29.6 MB/s 32.9 MB/s Slightly faster peak random mixed IO.
Market Share
Based on 6,060,410 SSDs tested.
User Rating
UBM User Rating
64 % 76.2 % More popular.
Market Share
Market Share (trailing 30 days)
0.1 % 1.1 % Hugely higher market share.
Price (score)
$105 103 USD +2%
Value For Money
74.7 % 79.1 % Slightly better value.
DQ Read
Peak 4K-64Thread Read Speed
360 MB/s Slightly faster peak deep queue read.
328 MB/s
DQ Write
Peak 4K-64Thread Write Speed
314 MB/s Slightly faster peak deep queue write.
283 MB/s
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.3 MB/s 77.6 MB/s Faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
168 MB/s +1% 166 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
181 MB/s +4% 175 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
42.7 MB/s 44.5 MB/s +4%
45 Months 34.7 Months More recent.
AS-SSD Total
AS-SSD Total Score
1,161 Pts Slightly stronger server IO.
1,062 Pts
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) March 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $139
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $216SanDisk Extreme 16GB $18
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