Average Bench: 54% (638th of 908)

Based on 15,830 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Average average bench

The Samsung 840 120GB averaged 45.9% 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 23.7MB/s
Avg. 4K Random Write Speed 64.5MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 26.2%. This is a relatively narrow range which indicates that the Samsung 840 120GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 108MB/s
Avg. 4K-64Thread Mixed IO Speed 19.1MB/s

Average Bench

(Based on 15,830 samples)
Min Avg Max
347 Read 460 506
43.6 Write 108 133
64.1 Mixed 128 189
50% 232 MB/s
Min Avg Max
17.3 4K Read 23.7 29.4
35.6 4K Write 64.5 100
7.35 4K Mixed 9.13 10.6
81.7% 32.4 MB/s
Min Avg Max
21.3 DQ Read 168 329
48.4 DQ Write 96.4 126
7.67 DQ Mixed 19.1 28.3
44.6% 94.6 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
61GB free
Firmware: DXT09B0Q Max speed: SATA 3.0 600 MB/s
Read 495
Write 114
Mixed 136
54% 248 MB/s
4K Read 29
4K Write 93.6
4K Mixed 9.02
105% 43.9 MB/s
DQ Read 322
DQ Write 125
DQ Mixed 25.6
71% 158 MB/s
43GB free
Firmware: DXT08B0Q Max speed: SATA 3.0 600 MB/s
Read 500
Write 121
Mixed 138
55% 253 MB/s
4K Read 25.3
4K Write 80.4
4K Mixed 9.94
94% 38.5 MB/s
DQ Read 285
DQ Write 109
DQ Mixed 9.36
56% 135 MB/s
15,830 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,033,805 SSDs tested.

Typical 840 120GB Builds (Compare 8,195 builds) See popular component choices, score breakdowns and rankings.
Gaming 59%
Desktop 60%
Workstation 37%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $270

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $1,049

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.

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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
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  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) March 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


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

The single best upgrade for your PC...

Added 3 years ago.


18 months 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'.


3 years ago.

Deal  info.map-team.de/...

Geld verdienen

908 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 $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $141
Intel Core i5-8600K $235AMD RX 480 $400Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $170SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
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