Controller: Samsung MJX. Memory: Samsung 64 layer TLC V-NAND.

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND

Real World Speed
Performance profile from 233,202 user samples
280 User Benchmarks
Best Bench: 114% 170GB free
Worst Bench: 60% 233GB free
Poor: 60% Great: 114%
SPEED RANK: 115th / 885
232,922 User Benchmarks
Best Bench: 113% 45GB free
Worst Bench: 68% 99GB free
Poor: 68% Great: 113%
SPEED RANK: 83rd / 885
Effective Speed
Effective SSD Speed
88.5 % 93.7 % Slightly faster effective speed.
Avg. Sequential Read Speed
502 MB/s +1% 496 MB/s
Avg. Sequential Write Speed
362 MB/s 394 MB/s Slightly faster write speed.
4K Read
Avg. 4K Random Read Speed
35.6 MB/s 37.5 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
72.6 MB/s 75 MB/s +3%
Avg. Sequential Mixed IO Speed
382 MB/s 399 MB/s +4%
4K Mixed
Avg. 4K Random Mixed IO Speed
29.3 MB/s 32.9 MB/s Slightly faster random mixed IO.
Peak Sequential Read Speed
529 MB/s +2% 517 MB/s
Peak Sequential Write Speed
417 MB/s +0% 416 MB/s
4K Read
Peak 4K Random Read Speed
47.2 MB/s +2% 46.5 MB/s
4K Write
Peak 4K Random Write Speed
99.7 MB/s 103 MB/s +3%
Peak Sequential Mixed IO Speed
431 MB/s +2% 422 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
48.1 MB/s +1% 47.7 MB/s
Market Share
Based on 5,701,785 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.36 % 7.56 % Insanely higher market share.
Value For Money
88.4 % 99 % Slightly better value.
User Rating
UBM User Rating
51 % 126 % Hugely more popular.
Price (score)
$95 $88 Slightly cheaper.
1 Months Hugely more recent.
38 Months
DQ Read
Peak 4K-64Thread Read Speed
372 MB/s 372 MB/s
DQ Write
Peak 4K-64Thread Write Speed
277 MB/s 281 MB/s +1%
AS-SSD Total
AS-SSD Total Score
1,145 Pts 1,149 Pts +0%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
116 MB/s 118 MB/s +2%
ADQ Read
Avg. 4K-64Thread Read Speed
161 MB/s 179 MB/s Slightly faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
168 MB/s 175 MB/s +4%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
56 MB/s 63.7 MB/s Slightly faster deep queue mixed IO.
250GB 250GB

The 860 Evo is the latest mainstream SATA SSD from Samsung. The 2.5-inch version of the 860 Evo will be available in several capacities ranging from 250 GB to a staggering 4TB. It’s also available in the slimmer M.2 and mSATA form factors. The 860 Evo demonstrates marginally reduced performance compared to its popular, but now three year old predecessor, the 850 Evo. In a head to head comparison the 860 looses by a very modest 6% in terms of effective speed. The 860 Evo is based on a refinement of Samsung’s consumer grade TLC V-NAND, this time featuring 256Gb and 512 Gb 64 layer V-NAND and it also features a new "MJX" controller. The 250 GB version can reach sequential write speeds of up to 520 MB/s, dropping to 300 MB/s once the SLC cache is exhausted (the 250 GB version has a 12 GB SLC write cache). Peak sequential read speeds of 560 MB/s are achievable across the different capacities. The 250GB version has a 512 MB LPDDR4 DRAM cache. All capacities have a five year warranty, but as a testament to the enhanced reliability of this new technology, the warrantied terabytes written (TBW) has doubled from 75 TBW to 150 TBW for the 250 GB 860 Evo. [Jan '18 SSDrivePro]


The 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders[Dec '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) February 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 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $79G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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