Average Bench: 60.5% (781st of 1058)

Based on 51,762 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Above average average bench

The Samsung 840 120GB averaged 39.5% 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 Random Write Speed 68.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 30.2%. 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 99.3MB/s
Avg. Sequential Write Speed 112MB/s

Average Bench

(Based on 51,762 samples)
Min Avg Max
312 Read 419 484
45.5 Write 112 136
71.1 Mixed 115 134
36 SusWrite 99.3 132
40.6% 186 MB/s
Min Avg Max
17.9 4K Read 25.2 30.1
34.2 4K Write 68.9 104
13.2 4K Mixed 18.2 21.5
98% 37.4 MB/s
Min Avg Max
164 DQ Read 293 336
42.3 DQ Write 104 129
33.4 DQ Mixed 46.2 51
74% 147 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
112GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 131 130 130 130 130 130 MB/s
Read 473
Write 124
Mixed 140
SusWrite 130
47% 217 MB/s
4K Read 26.6
4K Write 77.8
4K Mixed 19.2
106% 41.2 MB/s
DQ Read 327
DQ Write 130
DQ Mixed 49.9
84% 169 MB/s
50GB free (System drive)
Firmware: DXT07B0Q
SusWrite @10s intervals: 104 107 108 109 103 104 MB/s
Read 424
Write 121
Mixed 119
SusWrite 106
42% 193 MB/s
4K Read 27.4
4K Write 98.2
4K Mixed 19.1
118% 48.2 MB/s
DQ Read 330
DQ Write 110
DQ Mixed 48.3
81% 163 MB/s
112GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 134 134 133 133 127 133 MB/s
Read 399
Write 130
Mixed 134
SusWrite 132
44% 199 MB/s
4K Read 27.2
4K Write 73.1
4K Mixed 18.6
104% 39.6 MB/s
DQ Read 334
DQ Write 128
DQ Mixed 50.4
85% 171 MB/s
51,762 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,497,146 SSDs tested.

Typical 840 120GB Builds (Compare 10,235 builds) See popular component choices, score breakdowns and rankings.
Gaming 41%
Speed boat
Desktop 80%
Aircraft carrier
Workstation 32%
Sail boat

Motherboard: Asus P8Z77-V LX - $130

EDIT WITH CUSTOM PC BUILDER Value: 45% - Average Total price: $781

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) December 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.


5 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'.


7 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 i5-12600K $300Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $220Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $315Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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