Average Bench: 68.8% (668th of 1058)

Based on 38,032 user benchmarks.  Model: Samsung SSD 840 Series

The Samsung 840 is the budget version of the 840 Pro, the main difference between the hardware on the two drives is the type of flash memory used. The cheaper 840 uses TLC NAND which is cheaper than the MLC found in the Pro version of this drive. The performance hit as a result of the cheaper TLC memory is approximately 30%. The 840 delvers both average real world speeds (435 MB/s) and average enterprise speeds (AS-SSD Total Score 920). The relative weak spots in this drives performance profile are its write ability, where it scores just 254 MB/s in the sequential write test. The upside to the lost performance over the Pro version is a significant reduction in price which leaves this drive an average value for money proposition at its current price of £135. There are, however, better value drives to be had elsewhere including Samsungs own newly released EVO which effectively supersedes the 840. [Aug '13 SSDrivePro]

Above average average bench

The Samsung 840 250GB averaged 31.2% 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 25.9MB/s
Avg. 4K-64Thread Read Speed 314MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 250GB is 33.9%. This is a relatively narrow range which indicates that the Samsung 840 250GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 149MB/s
Avg. Sustained Write Speed 170MB/s

Average Bench

(Based on 38,032 samples)
Min Avg Max
305 Read 413 481
59.7 Write 189 255
92.9 Mixed 149 177
51 SusWrite 170 248
50.8% 230 MB/s
Min Avg Max
19.5 4K Read 25.9 30.1
37.4 4K Write 70.4 100
15.9 4K Mixed 22.4 26.2
105% 39.6 MB/s
Min Avg Max
186 DQ Read 314 369
65.7 DQ Write 157 217
39.2 DQ Mixed 54.4 59.4
88.6% 175 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
232GB free
Firmware: DXT06B0Q
SusWrite @10s intervals: 247 243 243 244 245 244 MB/s
Read 464
Write 254
Mixed 172
SusWrite 244
63% 284 MB/s
4K Read 26.3
4K Write 80.4
4K Mixed 26.3
116% 44.3 MB/s
DQ Read 233
DQ Write 200
DQ Mixed 53.9
85% 162 MB/s
80GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 245 242 238 243 238 243 MB/s
Read 476
Write 229
Mixed 174
SusWrite 242
62% 280 MB/s
4K Read 29
4K Write 81.9
4K Mixed 24.8
119% 45.2 MB/s
DQ Read 210
DQ Write 183
DQ Mixed 52.2
78% 148 MB/s
26GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 241 73 38 39 36 37 MB/s
Read 472
Write 222
Mixed 175
SusWrite 77.4
52% 237 MB/s
4K Read 28.4
4K Write 76.5
4K Mixed 25.6
116% 43.5 MB/s
DQ Read 215
DQ Write 184
DQ Mixed 51.9
79% 150 MB/s
38,032 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,078,113 SSDs tested.


MSRP ≈ $195 @ launch in Oct '12
AmazonUS $1993 years
Send price feedback
Typical 840 250GB Builds (Compare 9,557 builds) See popular component choices, score breakdowns and rankings.
Gaming 41%
Speed boat
Desktop 80%
Aircraft carrier
Workstation 32%
Sail boat

Motherboard: Asus P8Z77-V LX

EDIT WITH CUSTOM PC BUILDER Value: 37% - Below average Total price: $654

Popular 840 250GB 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) September 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 8 years ago.

Very poor

8 years ago.

Review  hexus.net/...

Image  img.hexus.net/...
AS SSD Benchmark Speed Test

AS SSD Benchmark Speed Test

Review  www.hardocp.com/...

Review  thessdreview.com/...

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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $44
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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