Average Bench: 83.8% (133rd of 850)

Based on 2,072 user benchmarks.  Models: Samsung SSD 840 PRO Series, Samsung SSD 840, Samsung SSD 840 PRO Seri, Samsung SSD 840 PRO

Very good average bench

The Samsung 840 Pro 512GB averaged just 16.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung 840 Pro 512GB near the top of the comparison list.


Avg. 4K Random Read Speed 28.1MB/s
Avg. 4K Random Write Speed 77.1MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 512GB is 54.6%. This is a relatively wide range which indicates that the Samsung 840 Pro 512GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Read Speed 191MB/s
Avg. Sequential Write Speed 360MB/s

Average Bench

(Based on 2,072 samples)
Min Avg Max
375 Read 492 524
95.5 Write 360 496
157 Mixed 404 510
93% 419 MB/s
Min Avg Max
17.7 4K Read 28.1 36.3
35.2 4K Write 77.1 117
13.3 4K Mixed 23.2 30.7
113% 42.8 MB/s
Min Avg Max
23.5 DQ Read 191 378
60.8 DQ Write 193 322
15.6 DQ Mixed 58.5 103
80.7% 147 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
71GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
Read 472
Write 421
Mixed 442
99% 445 MB/s
4K Read 28.6
4K Write 70.3
4K Mixed 20.8
107% 39.9 MB/s
DQ Read 299
DQ Write 73.7
DQ Mixed 15.4
56% 129 MB/s
172GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
Read 508
Write 432
Mixed 480
106% 473 MB/s
4K Read 27
4K Write 67.6
4K Mixed 22.2
105% 38.9 MB/s
DQ Read 30.3
DQ Write 199
DQ Mixed 22.4
44% 84 MB/s
67GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
Read 368
Write 259
Mixed 284
68% 304 MB/s
4K Read 29.7
4K Write 64.2
4K Mixed 25.3
111% 39.7 MB/s
DQ Read 247
DQ Write 124
DQ Mixed 21
59% 131 MB/s
2,072 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,859,716 SSDs tested.


OutletPCUS $354.3422 hrs ago.
AmazonUS $374.8656 secs ago.
EbayUS $492.4316 mins ago.
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Typical 840 Pro 512GB Builds (Compare 4,432 builds) See popular component choices, score breakdowns and rankings.
Gaming 63%
Desktop 78%
Workstation 58%

Motherboard: Asus MAXIMUS VII HERO

EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: $1,088

Popular 840 Pro 512GB compatible motherboards:

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 userbenchmark.com.
  • - 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.
Solid State Drive Rankings (Price vs Performance) May 2017 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]

850 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-7700K $309Nvidia GTX 1070 $368Samsung 850 Evo 250GB $99
Intel Core i5-7600K $229AMD RX 480 $227Samsung 850 Pro 256GB $132
AMD Ryzen 7 1700 $300Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $160
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $136SanDisk Ultra Fit 32GB $12
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