Group Average(9 Highest-Voted)
Real World Speed
Performance profile from 13,110 user samples
13,110 User Benchmarks
Best Bench: 110% 55GB free
Worst Bench: 57% 31GB free (System drive)
Poor: 57% Great: 110%
SPEED RANK: 220th / 956
Effective Speed
Effective SSD Speed
86.9 % Slightly faster effective speed.
82.6 %
Avg. Sequential Read Speed
436 MB/s +2% 429 MB/s
Avg. Sequential Write Speed
319 MB/s +0% 317 MB/s
4K Read
Avg. 4K Random Read Speed
30.4 MB/s +1% 30 MB/s
4K Write
Avg. 4K Random Write Speed
86.7 MB/s +2% 85.4 MB/s
Avg. Sequential Mixed IO Speed
254 MB/s 285 MB/s Slightly faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
35.8 MB/s +5% 34.2 MB/s
Avg. Sustained Write Speed
249 MB/s Faster sustained write speed.
214 MB/s
Peak Sequential Read Speed
492 MB/s +1% 485 MB/s
Peak Sequential Write Speed
442 MB/s Faster peak write speed.
370 MB/s
4K Read
Peak 4K Random Read Speed
36.9 MB/s 37.2 MB/s +1%
4K Write
Peak 4K Random Write Speed
117 MB/s 121 MB/s +4%
Peak Sequential Mixed IO Speed
323 MB/s 337 MB/s +4%
4K Mixed
Peak 4K Random Mixed IO Speed
44 MB/s 45 MB/s +2%
Peak Sequential Sustained Write 60s Average
427 MB/s Much faster peak sustained write speed.
306 MB/s
Market Share
Based on 7,977,448 SSDs tested.
User Rating
UBM User Rating
63 % 63.6 % +1%
Market Share
Market Share (trailing 30 days)
0.21 % 0.22 % +4%
Price (score)
$160 111 USD Much cheaper.
Value For Money
35.5 % 45.8 % Better value.
DQ Read
Peak 4K-64Thread Read Speed
378 MB/s Faster peak deep queue read.
317 MB/s
DQ Write
Peak 4K-64Thread Write Speed
313 MB/s Slightly faster peak deep queue write.
288 MB/s
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
154 MB/s 217 MB/s Much faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
314 MB/s Faster deep queue read.
244 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
234 MB/s Slightly faster deep queue write.
222 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
117 MB/s 149 MB/s Faster deep queue mixed IO.
70 Months 57.2 Months More recent.
AS-SSD Total
AS-SSD Total Score
1,186 Pts Slightly stronger server IO.
1,063 Pts
128GB   —

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) August 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 - 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

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The Best.
Intel Core i7-8700K $356Nvidia GTX 1070 $380Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $249AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
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