Average Bench: 54.3% (580th of 850)

Based on 7,689 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Average average bench

The Samsung 840 120GB averaged 45.7% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Read Speed 24MB/s
Avg. 4K Random Write Speed 65.1MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 28.9%. This is a relatively narrow range which indicates that the Samsung 840 120GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 109MB/s
Avg. 4K-64Thread Mixed IO Speed 18.6MB/s

Average Bench

(Based on 7,689 samples)
Min Avg Max
330 Read 456 506
43.5 Write 109 134
60.7 Mixed 128 193
49.8% 231 MB/s
Min Avg Max
16.8 4K Read 24 30
33.2 4K Write 65.1 105
7.7 4K Mixed 9.22 10.6
82.6% 32.8 MB/s
Min Avg Max
22.2 DQ Read 174 332
38.7 DQ Write 94.2 127
7.8 DQ Mixed 18.6 28.1
44.7% 95.6 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
32GB free
Firmware: DXT0AB0Q Max speed: SATA 3.0 600 MB/s
Read 490
Write 123
Mixed 113
52% 242 MB/s
4K Read 27.9
4K Write 72.9
4K Mixed 9.63
93% 36.8 MB/s
DQ Read 316
DQ Write 114
DQ Mixed 27.9
70% 152 MB/s
105GB free
Firmware: DXT09B0Q
Read 483
Write 131
Mixed 189
58% 268 MB/s
4K Read 22.6
4K Write 62.3
4K Mixed 8.98
79% 31.3 MB/s
DQ Read 134
DQ Write 122
DQ Mixed 24.7
47% 93.8 MB/s
27GB free
Firmware: DXT0 Max speed: SATA 3.0 600 MB/s
Read 488
Write 90.8
Mixed 84.9
47% 221 MB/s
4K Read 22.9
4K Write 46.9
4K Mixed 9.79
72% 26.5 MB/s
DQ Read 184
DQ Write 68.9
DQ Mixed 26.1
46% 93 MB/s
15GB free
Firmware: DXT09B0Q Max speed: SATA 3.0 600 MB/s
Read 508
Write 71.4
Mixed 74.1
46% 218 MB/s
4K Read 21.8
4K Write 45.1
4K Mixed 8.85
68% 25.2 MB/s
DQ Read 23.9
DQ Write 86.5
DQ Mixed 8.74
20% 39.7 MB/s
22GB free
Firmware: DXT08B0Q Max speed: SATA 3.0 600 MB/s
Read 374
Write 128
Mixed 152
48% 218 MB/s
4K Read 21.8
4K Write 51.4
4K Mixed 8.11
71% 27.1 MB/s
DQ Read 24.4
DQ Write 50.8
DQ Mixed 8.06
14% 27.8 MB/s
7,689 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,866,140 SSDs tested.

Typical 840 120GB Builds (Compare 6,151 builds) See popular component choices, score breakdowns and rankings.
Gaming 59%
Desktop 60%
Workstation 37%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $350

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $1,224

Popular 840 120GB 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.

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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.
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  • - Compare your components to the highest voted in class.
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  • - 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]


Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode TLC.

The single best upgrade for your PC...

Added 3 years ago.


8 months ago.

Just one problem, time of release makes it slower (tech-wise talking, of course). Tweaks for software and system OS caches mitigates the problem (durability and performance on SATA-II without AHCI). Would the solution be a newer and latest SSD? I don't think so because my main problem is my old G41 motherboard and processor, but it's still 3 or 4 times better than a SATA-III 6gbps HDD for OS and software in my honest opinion. Al least my build will last from 4 to 6 years to me for basic tasks until I get the buck for a 'Battleship PC'.


2 years ago.

Deal  info.map-team.de/...

Geld verdienen

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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

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The Best.
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Intel Core i5-7600K $229AMD RX 480 $248Samsung 850 Pro 256GB $138
AMD Ryzen 7 1700 $300Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $165
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Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
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