Average Bench: 60.7% (703rd of 1000)

Based on 24,105 user benchmarks.  Models: Samsung SSD 840 Series, Samsung SSD 840 Seri

Above average average bench

The Samsung 840 120GB averaged 39.2% 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 71.7MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung 840 120GB is 28.4%. 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 98.5MB/s
Avg. Sequential Write Speed 111MB/s

Average Bench

(Based on 24,105 samples)
Min Avg Max
306 Read 420 486
50.9 Write 111 135
73.1 Mixed 116 135
39.9 SusWrite 98.5 131
40.6% 186 MB/s
Min Avg Max
18.7 4K Read 25.2 30.1
37.7 4K Write 71.7 106
14.2 4K Mixed 18.3 21.3
99.6% 38.4 MB/s
Min Avg Max
30.5 DQ Read 285 336
48.2 DQ Write 104 129
20.6 DQ Mixed 45.8 51.1
73% 145 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
51GB free (System drive)
Firmware: DXT07B0Q
SusWrite @10s intervals: 100 105 119 115 111 113 MB/s
Read 350
Write 121
Mixed 120
SusWrite 110
38% 176 MB/s
4K Read 19.8
4K Write 78.3
4K Mixed 15
91% 37.7 MB/s
DQ Read 328
DQ Write 112
DQ Mixed 46.8
80% 162 MB/s
34GB free (System drive)
Firmware: DXT08B0Q
SusWrite @10s intervals: 104 81 79 75 77 77 MB/s
Read 392
Write 96.5
Mixed 113
SusWrite 82
37% 171 MB/s
4K Read 24.1
4K Write 80
4K Mixed 19.4
104% 41.2 MB/s
DQ Read 79.7
DQ Write 85.8
DQ Mixed 18.7
32% 61.4 MB/s
45GB free (System drive)
Firmware: DXT07B0Q
SusWrite @10s intervals: 121 111 106 120 129 128 MB/s
Read 325
Write 134
Mixed 121
SusWrite 119
39% 175 MB/s
4K Read 20.6
4K Write 47.7
4K Mixed 17.2
78% 28.5 MB/s
DQ Read 168
DQ Write 127
DQ Mixed 44.3
61% 113 MB/s
24,105 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 14,382,218 SSDs tested.

Typical 840 120GB Builds (Compare 12,125 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: 61% - Good Total price: $833

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.
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  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) May 2019 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 5 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

1000 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 $314Samsung 850 Evo 250GB $92
AMD Ryzen 5 1600 $108Nvidia GTX 1060-6GB $208Samsung 850 Evo 500GB $99
AMD Ryzen 5 2600 $145Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $90SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $651SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $73Corsair Vengeance LPX DDR4 3200 C16 2x8GB $85SanDisk Ultra Fit 32GB $12
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