Average Bench: 54% (595th of 862)

Based on 11,102 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Average average bench

The Samsung 840 120GB averaged 46.0% 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 24.1MB/s
Avg. 4K Random Write Speed 64.3MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 29%. 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 104MB/s
Avg. 4K-64Thread Mixed IO Speed 19.6MB/s

Average Bench

(Based on 11,102 samples)
Min Avg Max
337 Read 454 509
39.4 Write 104 133
58.2 Mixed 122 188
48.9% 227 MB/s
Min Avg Max
17.6 4K Read 24.1 29.7
32.7 4K Write 64.3 99.8
7.58 4K Mixed 9.18 10.6
82.2% 32.5 MB/s
Min Avg Max
22.4 DQ Read 180 330
43.1 DQ Write 94.8 126
8.06 DQ Mixed 19.6 28.1
46% 98.1 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
10GB free
Firmware: DXT06B0Q
Read 477
Write 128
Mixed 135
53% 247 MB/s
4K Read 28
4K Write 103
4K Mixed 9.06
108% 46.5 MB/s
DQ Read 30.6
DQ Write 123
DQ Mixed 28
36% 60.5 MB/s
85GB free
Firmware: DXT09B0Q Max speed: SATA 3.0 600 MB/s
Read 493
Write 132
Mixed 131
54% 252 MB/s
4K Read 25.4
4K Write 70
4K Mixed 10.5
89% 35.3 MB/s
DQ Read 154
DQ Write 120
DQ Mixed 8.76
41% 94.3 MB/s
22GB free
Firmware: DXT09B0Q Max speed: SATA 3.0 600 MB/s
Read 441
Write 105
Mixed 127
48% 224 MB/s
4K Read 24.3
4K Write 57.4
4K Mixed 10
80% 30.6 MB/s
DQ Read 166
DQ Write 112
DQ Mixed 25.8
50% 101 MB/s
26GB free
Firmware: DXT07B0Q Max speed: SATA 3.0 600 MB/s
Read 461
Write 64.5
Mixed 63.5
42% 196 MB/s
4K Read 19.4
4K Write 39.6
4K Mixed 8.2
61% 22.4 MB/s
DQ Read 22.6
DQ Write 85.1
DQ Mixed 8.29
20% 38.7 MB/s
11,102 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 4,430,761 SSDs tested.

Typical 840 120GB Builds (Compare 6,147 builds) See popular component choices, score breakdowns and rankings.
Gaming 59%
Desktop 60%
Workstation 37%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $340

EDIT WITH CUSTOM PC BUILDER Value: 66% - Good Total price: $1,100

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.

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.
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  • - 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.
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Solid State Drive Rankings (Price vs Performance) November 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.


14 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'.


3 years ago.

Deal  info.map-team.de/...

Geld verdienen

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862 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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Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
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