Average Bench: 68.4% (633rd of 1026)

Based on 26,605 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 31.5% 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-64Thread Read Speed 312MB/s
Avg. 4K Random Read Speed 25.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 250GB is 35.9%. This is a relatively wide range which indicates that the Samsung 840 250GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 148MB/s
Avg. Sustained Write Speed 171MB/s

Average Bench

(Based on 26,605 samples)
Min Avg Max
300 Read 415 482
60.5 Write 186 256
88.8 Mixed 148 176
48.7 SusWrite 171 248
50.8% 230 MB/s
Min Avg Max
18.3 4K Read 25.6 30.2
38.6 4K Write 68.3 101
16.8 4K Mixed 22.3 25.8
103% 38.7 MB/s
Min Avg Max
196 DQ Read 312 369
65.8 DQ Write 157 218
40.9 DQ Mixed 54.1 59
88.2% 174 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
113GB free (System drive)
Firmware: DXT09B0Q
SusWrite @10s intervals: 168 168 162 157 138 134 MB/s
Read 418
Write 231
Mixed 144
SusWrite 155
52% 237 MB/s
4K Read 25.9
4K Write 86.7
4K Mixed 21.7
113% 44.8 MB/s
DQ Read 338
DQ Write 180
DQ Mixed 59
97% 192 MB/s
210GB free
Firmware: DXT09B0Q
SusWrite @10s intervals: 240 246 246 242 241 238 MB/s
Read 342
Write 254
Mixed 160
SusWrite 242
56% 249 MB/s
4K Read 27.6
4K Write 66.6
4K Mixed 24.7
109% 39.6 MB/s
DQ Read 228
DQ Write 201
DQ Mixed 53.7
84% 161 MB/s
111GB free (System drive)
Firmware: DXT08B0Q
SusWrite @10s intervals: 93 98 168 164 170 168 MB/s
Read 321
Write 246
Mixed 136
SusWrite 143
47% 212 MB/s
4K Read 23.2
4K Write 68.7
4K Mixed 20.6
98% 37.5 MB/s
DQ Read 27.6
DQ Write 87.8
DQ Mixed 24.4
28% 46.6 MB/s
26,605 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 26,653,707 SSDs tested.


Approx. $195 @ launch in Oct '12
AmazonUS $19920 months
OutletPCUS $2082 years
Send price feedback
Typical 840 250GB Builds (Compare 60,728 builds) See popular component choices, score breakdowns and rankings.
Gaming 33%
Sail boat
Desktop 62%
Workstation 27%

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 45% - Average Total price: $533

Popular 840 250GB systems:

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.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) May 2020 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 7 years ago.

Very poor

6 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/...

1026 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 i5-9400F $165Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $199Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $500Samsung 850 Pro 512GB $240
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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