Average Bench: 60.7% (777th of 1058)

Based on 45,426 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Above average average bench

The Samsung 840 120GB averaged 39.3% 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-64Thread Read Speed 293MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 29.8%. 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 110MB/s

Average Bench

(Based on 45,426 samples)
Min Avg Max
318 Read 423 491
42.2 Write 110 135
68.1 Mixed 115 135
35.2 SusWrite 98.2 132
40.7% 187 MB/s
Min Avg Max
17.9 4K Read 25.4 30
34.1 4K Write 68.6 105
12.8 4K Mixed 18.3 21.6
98.3% 37.4 MB/s
Min Avg Max
157 DQ Read 293 336
43 DQ Write 104 130
34.7 DQ Mixed 46.8 51
74.4% 148 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
27GB free
Firmware: DXT08B0Q
SusWrite @10s intervals: 84 77 62 54 44 48 MB/s
Read 476
Write 102
Mixed 118
SusWrite 61.7
41% 189 MB/s
4K Read 27.5
4K Write 80.8
4K Mixed 21.8
112% 43.4 MB/s
DQ Read 323
DQ Write 88.8
DQ Mixed 49.1
77% 154 MB/s
14GB free (System drive)
Firmware: DXT07B0Q
SusWrite @10s intervals: 100 103 45 65 107 109 MB/s
Read 363
Write 44.1
Mixed 70.1
SusWrite 88.2
30% 141 MB/s
4K Read 27.3
4K Write 39.7
4K Mixed 19
87% 28.7 MB/s
DQ Read 328
DQ Write 51.4
DQ Mixed 47.4
71% 142 MB/s
78GB free (System drive)
Firmware: DXT08B0Q
SusWrite @10s intervals: 62 82 98 89 117 110 MB/s
Read 347
Write 89
Mixed 85.3
SusWrite 92.9
34% 154 MB/s
4K Read 25.8
4K Write 44.1
4K Mixed 15.5
82% 28.5 MB/s
DQ Read 295
DQ Write 53.6
DQ Mixed 42
65% 130 MB/s
45,426 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 41,897,553 SSDs tested.

Typical 840 120GB Builds (Compare 8,104 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) April 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

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 i5-11400F $180Nvidia RTX 3070 $500Crucial MX500 250GB $50
Intel Core i5-11600K $265Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i5-10600K $215Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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