Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.


Controller: LSI SandForce SF2281VB1-SDC. Memory: Micron Asynchronous 25nm MLC. Release date: Q2 2011.

Real World Speed
Performance profile from 46,690 user samples
23,886 User Benchmarks
Best Bench: 110% 106GB free
Worst Bench: 61% 19GB free
Poor: 61% Great: 110%
SPEED RANK: 294th / 1017
22,804 User Benchmarks
Best Bench: 60% 192GB free
Worst Bench: 33% 12GB free (System drive)
Poor: 33% Great: 60%
SPEED RANK: 840th / 1017
Effective Speed
Effective SSD Speed
88.5 % Hugely faster effective speed.
48.3 %
Avg. Sequential Read Speed
446 MB/s Hugely faster read speed.
150 MB/s
Avg. Sequential Write Speed
331 MB/s Hugely faster write speed.
115 MB/s
4K Read
Avg. 4K Random Read Speed
30.3 MB/s Much faster random read.
22.2 MB/s
4K Write
Avg. 4K Random Write Speed
82.7 MB/s Faster random write.
68.5 MB/s
Avg. Sequential Mixed IO Speed
266 MB/s Hugely faster mixed IO speed.
131 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
35.6 MB/s Much faster random mixed IO.
26 MB/s
Avg. Sustained Write Speed
277 MB/s Hugely faster sustained write speed.
90.5 MB/s
Peak Sequential Read Speed
494 MB/s Hugely faster peak read speed.
185 MB/s
Peak Sequential Write Speed
445 MB/s Hugely faster peak write speed.
140 MB/s
4K Read
Peak 4K Random Read Speed
36.7 MB/s Much faster peak random read.
28.2 MB/s
4K Write
Peak 4K Random Write Speed
117 MB/s Slightly faster peak random write.
106 MB/s
Peak Sequential Mixed IO Speed
327 MB/s Hugely faster peak mixed IO speed.
152 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
44.1 MB/s Much faster peak random mixed IO.
33.6 MB/s
Peak Sequential Sustained Write 60s Average
441 MB/s Hugely faster peak sustained write speed.
112 MB/s
Market Share
Based on 22,602,371 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.12 % Much higher market share.
0.08 %
Value For Money
4.87 % Much better value.
3.55 %
User Rating
UBM User Rating
64 % More popular.
53 %
Price (score)
$160 $102 Much cheaper.
88 Months More recent.
105 Months
DQ Read
Peak 4K-64Thread Read Speed
376 MB/s Hugely faster peak deep queue read.
183 MB/s
DQ Write
Peak 4K-64Thread Write Speed
325 MB/s Hugely faster peak deep queue write.
139 MB/s
AS-SSD Total
AS-SSD Total Score
1,196 Pts Hugely stronger server IO.
615 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
155 MB/s Slightly faster peak deep queue mixed IO.
139 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
317 MB/s Hugely faster deep queue read.
124 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
236 MB/s Hugely faster deep queue write.
111 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
122 MB/s Much faster deep queue mixed IO.
91 MB/s
128GB 120GB

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) February 2020 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i5-9400F $150Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $49
Intel Core i5-9600K $210Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $356Nvidia RTX 2060 $330Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $82SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $683SanDisk Extreme 16GB $24
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