Average Bench: 59.6% (655th of 959)

Based on 19,278 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Average average bench

The Samsung 840 120GB averaged 40.4% 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 69MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 28.3%. 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 92.7MB/s
Avg. Sequential Write Speed 108MB/s

Average Bench

(Based on 19,278 samples)
Min Avg Max
315 Read 415 483
50.6 Write 108 135
73.2 Mixed 113 132
35.8 SusWrite 92.7 131
39.7% 182 MB/s
Min Avg Max
19.5 4K Read 25.2 30.1
38.3 4K Write 69 103
15.1 4K Mixed 18.3 21.1
98.1% 37.5 MB/s
Min Avg Max
28.1 DQ Read 278 337
50.1 DQ Write 101 129
19.6 DQ Mixed 44.9 50.9
71.2% 141 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
40GB free (System drive)
Firmware: DXT07B0Q
SusWrite @10s intervals: 96 89 86 83 80 90 MB/s
Read 403
Write 100
Mixed 106
SusWrite 87.2
38% 174 MB/s
4K Read 28.5
4K Write 80.2
4K Mixed 20.2
112% 43 MB/s
DQ Read 329
DQ Write 113
DQ Mixed 48.4
81% 164 MB/s
18GB free (System drive)
Firmware: DXT0AB0Q
SusWrite @10s intervals: 106 103 106 110 111 108 MB/s
Read 442
Write 123
Mixed 123
SusWrite 107
43% 199 MB/s
4K Read 22.6
4K Write 86.5
4K Mixed 17.1
102% 42.1 MB/s
DQ Read 338
DQ Write 109
DQ Mixed 46.7
81% 164 MB/s
36GB free (System drive)
Firmware: DXT06B0Q
SusWrite @10s intervals: 100 56 55 54 56 114 MB/s
Read 389
Write 53.6
Mixed 88.3
SusWrite 72.5
32% 151 MB/s
4K Read 22.7
4K Write 61.1
4K Mixed 14.7
86% 32.8 MB/s
DQ Read 315
DQ Write 61.8
DQ Mixed 45.6
70% 141 MB/s
19,278 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,138,912 SSDs tested.

Typical 840 120GB Builds (Compare 8,133 builds) See popular component choices, score breakdowns and rankings.
Gaming 58%
Desktop 60%
Workstation 37%
Jet ski

Motherboard: Asus P8Z77-V LX

EDIT WITH CUSTOM PC BUILDER Value: 70% - Very good Total price: $666

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.
  • - 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.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) October 2018 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 4 years ago.


2 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'.


4 years ago.

Deal  info.map-team.de/...

Geld verdienen

959 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 i7-8700K $370Nvidia GTX 1070 $350Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $355AMD RX 480 $280Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $157SanDisk Ultra Fit 32GB $12
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