Average Bench: 91% (235th of 992)

Based on 35,759 user benchmarks.  Models: Samsung SSD 840 PRO Series, Samsung SSD 840, Samsung SSD 840 PRO Seri, Samsung SSD 840 PRO

The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

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Excellent average bench

The Samsung 840 Pro 256GB averaged just 9.0% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung 840 Pro 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 137MB/s
Avg. 4K Random Mixed IO Speed 37.9MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 52.8%. This is a relatively wide range which indicates that the Samsung 840 Pro 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 283MB/s
Avg. Sequential Mixed IO Speed 287MB/s
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Average Bench

(Based on 35,759 samples)
Min Avg Max
344 Read 454 509
131 Write 352 479
208 Mixed 287 353
79.7 SusWrite 283 474
77% 344 MB/s
Min Avg Max
22 4K Read 30 36.3
43 4K Write 83.5 118
26.8 4K Mixed 37.9 46.9
138% 50.5 MB/s
Min Avg Max
35.7 DQ Read 328 384
111 DQ Write 253 332
45.8 DQ Mixed 137 174
144% 239 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
233GB free
Firmware: DXM05B0Q
SusWrite @10s intervals: 466 482 483 483 486 485 MB/s
Read 507
Write 475
Mixed 376
SusWrite 481
104% 460 MB/s
4K Read 32.5
4K Write 83.5
4K Mixed 42.8
148% 52.9 MB/s
DQ Read 378
DQ Write 334
DQ Mixed 179
183% 297 MB/s
112GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 435 437 444 437 438 397 MB/s
Read 442
Write 380
Mixed 253
SusWrite 431
85% 376 MB/s
4K Read 28.9
4K Write 84.8
4K Mixed 41.5
142% 51.7 MB/s
DQ Read 378
DQ Write 277
DQ Mixed 137
154% 264 MB/s
69GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 136 140 147 129 126 130 MB/s
Read 472
Write 196
Mixed 258
SusWrite 135
59% 265 MB/s
4K Read 31.9
4K Write 81.9
4K Mixed 39.2
142% 51 MB/s
DQ Read 383
DQ Write 232
DQ Mixed 132
145% 249 MB/s
35,759 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 13,029,063 SSDs tested.

 Prices

Approx. $203 @ launch in Oct '12
AmazonUS $8033 mins
OutletPCUS $1201 hr
EbayUS $30016 mins
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Typical 840 Pro 256GB Builds (Compare 5,718 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 71%
Battleship
Workstation
Workstation 53%
Yacht

Motherboard: Asus MAXIMUS VI HERO - $190

EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $996

Popular 840 Pro 256GB 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.
  • - 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.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 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]

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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.

 Comments

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

Delivers high speeds for both compressible and incompressible data...

Added 6 years ago.

Good (edit your comment) Add link

21 months ago.

Got it a year or so ago and I loved it then and still love it now, though it is a little pricy

Comment 

T61P with win7 64 &, Intel Extreme X9000, 8gb ram, fast ......... verrrry fast. Faster than many new computers. Gives a lot of new life to older PCs.—Sep '14


Good

10 months ago.

An awesome drive! Going to get one to upgrade my rig!


Good

23 months ago.

Excellent performance and reliability. I already have 5TB traffic over the past year. Performance has not decreased!


Average

7 months ago.

Need to improve a lot on Research and Development . Please don't fool people with your small small improvements .With R&D U can do much better.


Liked

22 months ago.


Liked

2 years ago.

Comment 

though for any practical purpose the EVO is just as good/fast—Sep '14


Poor

3 years ago.

Can someone please explain to me why I get under 1MB/s 4K Mixed IO with my Samsung 840 pro when the average UBM Speed is 21.8MB/s for 4K Mixed IO operations?


Very good

5 years ago.

Review  hexus.net/...

Image  img.hexus.net/...
Sep '12 AS SSD Benchmark Test

Sep '12 AS SSD Benchmark Test

Review  www.hardocp.com/...

Review  www.servethehome.com/...

Image  www.servethehome.com/...
Nov '12 AS SSD Benchmark Test Score

Nov '12 AS SSD Benchmark Test Score

Review  www.custompcreview.com/...

Image  www.custompcreview.com/...
Sep '12 AS SSD Benchmark Speed Test Score

Sep '12 AS SSD Benchmark Speed Test Score

Deal  www.google.co.uk/...

Jun '13 £185 @Ebuyer


Liked

3 years ago.

Comment 

Great drive under normal/light load. Write latency starts to fall apart a bit under sustained loads.—Sep '14


Very good

6 years ago.

This drive, the latest from Samsung, takes SSD technology a small but clear step forward. It excels in the area of deep queue depth 4k random writes where it outperforms all of its direct competition. The brand new and almost impossible to get hold of Plextor M5 is currently the strongest competitor to the Samsung but until prices on the Plextor drop from an astronomical £250, Samsung have an easy win despite not having priced the 840 particularly aggressively themselves.


Excellent

4 years ago.

Just the best 256G SSD for me!


Your
opinion?
992 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

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