Average Bench: 59.9% (782nd of 1058)

Based on 51,090 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Average average bench

The Samsung 840 120GB averaged 40.0% 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 25.2MB/s
Avg. 4K-64Thread Read Speed 292MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 29.1%. This is a relatively narrow range which indicates that the Samsung 840 120GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 99MB/s
Avg. Sequential Write Speed 110MB/s

Average Bench

(Based on 51,090 samples)
Min Avg Max
310 Read 420 484
47.7 Write 110 135
70.5 Mixed 115 133
36.3 SusWrite 99 132
40.5% 186 MB/s
Min Avg Max
18.8 4K Read 25.2 30
32.7 4K Write 66 104
13.5 4K Mixed 18.1 21.4
96.3% 36.4 MB/s
Min Avg Max
168 DQ Read 292 335
43.8 DQ Write 102 129
28.4 DQ Mixed 45.7 51
73.4% 146 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
46GB free
Firmware: DXT07B0Q
SusWrite @10s intervals: 131 131 131 130 129 129 MB/s
Read 486
Write 132
Mixed 131
SusWrite 130
48% 220 MB/s
4K Read 30.1
4K Write 104
4K Mixed 22.3
129% 52 MB/s
DQ Read 334
DQ Write 128
DQ Mixed 50.4
85% 171 MB/s
40GB free (System drive)
Firmware: DXT0AB0Q
SusWrite @10s intervals: 105 118 122 119 119 111 MB/s
Read 466
Write 113
Mixed 120
SusWrite 116
44% 204 MB/s
4K Read 28.6
4K Write 89
4K Mixed 21
117% 46.2 MB/s
DQ Read 329
DQ Write 97.4
DQ Mixed 50.1
80% 159 MB/s
111GB free
Firmware: DXT07B0Q
SusWrite @10s intervals: 128 128 127 127 124 127 MB/s
Read 441
Write 129
Mixed 128
SusWrite 127
45% 206 MB/s
4K Read 26.1
4K Write 75.3
4K Mixed 19.6
104% 40.3 MB/s
DQ Read 329
DQ Write 120
DQ Mixed 48
82% 166 MB/s
51,090 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,553,673 SSDs tested.

Typical 840 120GB Builds (Compare 9,123 builds) See popular component choices, score breakdowns and rankings.
Gaming 41%
Speed boat
Desktop 81%
Aircraft carrier
Workstation 32%
Sail boat

Motherboard: Asus P8Z77-V LX

EDIT WITH CUSTOM PC BUILDER Value: 42% - Average Total price: $564

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.
  • - 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
Solid State Drive Rankings (Price vs Performance) August 2021 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.


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

The single best upgrade for your PC...

Added 7 years ago.


4 years 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'.


6 years ago.

Deal  info.map-team.de/...

Geld verdienen

1058 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 i5-11600K $270Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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