Average Bench: 60.6% (761st of 1040)

Based on 41,011 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Above average average bench

The Samsung 840 120GB averaged 39.4% 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 25.4MB/s
Avg. 4K Random Write Speed 69.4MB/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. Sustained Write Speed 98.2MB/s
Avg. Sequential Write Speed 112MB/s

Average Bench

(Based on 41,011 samples)
Min Avg Max
313 Read 422 488
43 Write 112 136
65.6 Mixed 116 135
35.8 SusWrite 98.2 132
40.8% 187 MB/s
Min Avg Max
18.8 4K Read 25.4 29.9
34.8 4K Write 69.4 102
14.3 4K Mixed 18.4 21.6
98.9% 37.8 MB/s
Min Avg Max
28.9 DQ Read 283 336
44.2 DQ Write 103 129
20.8 DQ Mixed 46.3 51.1
72.8% 144 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
111GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 131 129 129 129 128 129 MB/s
Read 421
Write 128
Mixed 133
SusWrite 129
44% 203 MB/s
4K Read 26.3
4K Write 81
4K Mixed 19.2
107% 42.2 MB/s
DQ Read 326
DQ Write 128
DQ Mixed 49.9
84% 168 MB/s
44GB free
Firmware: DXT06B0Q
SusWrite @10s intervals: 116 130 130 130 129 129 MB/s
Read 346
Write 119
Mixed 109
SusWrite 128
38% 175 MB/s
4K Read 24.6
4K Write 60.8
4K Mixed 17.8
92% 34.4 MB/s
DQ Read 28.9
DQ Write 97
DQ Mixed 19.8
28% 48.6 MB/s
82GB free (System drive)
Firmware: DXT07B0Q
SusWrite @10s intervals: 112 119 130 130 128 129 MB/s
Read 330
Write 130
Mixed 124
SusWrite 125
39% 177 MB/s
4K Read 21.2
4K Write 38.7
4K Mixed 16.6
74% 25.5 MB/s
DQ Read 212
DQ Write 126
DQ Mixed 45.6
67% 128 MB/s
41,011 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 37,685,855 SSDs tested.

Typical 840 120GB Builds (Compare 6,709 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.
  • - 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) January 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 6 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

1040 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 i5-9600K $208Nvidia RTX 3060-Ti $400Crucial MX500 250GB $38
Intel Core i5-10600K $257Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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