Average Bench: 82.2% (164th of 857)

Based on 14,590 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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Very good average bench

The Samsung 840 Pro 256GB averaged just 17.8% 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 Random Read Speed 28.2MB/s
Avg. 4K Random Write Speed 75.4MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 51.8%. This is a relatively wide range which indicates that the Samsung 840 Pro 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Read Speed 192MB/s
Avg. 4K-64Thread Mixed IO Speed 54.3MB/s
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Average Bench

(Based on 14,590 samples)
Min Avg Max
359 Read 486 523
105 Write 351 496
160 Mixed 381 509
90.2% 406 MB/s
Min Avg Max
18.5 4K Read 28.2 35.9
39.6 4K Write 75.4 117
15 4K Mixed 22.2 28.2
111% 41.9 MB/s
Min Avg Max
25.7 DQ Read 192 371
60.8 DQ Write 182 322
16.1 DQ Mixed 54.3 89.7
77.2% 143 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
111GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 503
Write 347
Mixed 433
95% 428 MB/s
4K Read 19.9
4K Write 74.7
4K Mixed 19.6
95% 38.1 MB/s
DQ Read 372
DQ Write 301
DQ Mixed 90
134% 254 MB/s
66GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 480
Write 219
Mixed 232
68% 310 MB/s
4K Read 26.6
4K Write 56.5
4K Mixed 20.6
96% 34.6 MB/s
DQ Read 166
DQ Write 152
DQ Mixed 57.7
71% 125 MB/s
228GB free
Firmware: 0
4KALIGNED
Read 434
Write 165
Mixed 248
62% 282 MB/s
4K Read 20.3
4K Write 37.2
4K Mixed 18.7
74% 25.4 MB/s
DQ Read 127
DQ Write 144
DQ Mixed 54.7
64% 109 MB/s
14,590 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,541,596 SSDs tested.

 Prices

OutletPCUS $187.831 day ago.
EbayUS $299.993 mins ago.
AmazonUS $307.381 month ago.
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Typical 840 Pro 256GB Builds (Compare 3,098 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 62%
Destroyer
Desktop
Desktop 70%
Battleship
Workstation
Workstation 53%
Yacht

Motherboard: Asus MAXIMUS VI HERO - $190

EDIT WITH CUSTOM PC BUILDER Value: 60% - Above average Total price: $1,361

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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - 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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  • - Compare your components to the highest voted in class.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) August 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

 Comments

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

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

Added 4 years ago.

Good (edit your comment) Add link

2 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


Poor

4 months ago.

Very good.


Good

2 months ago.

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


Good

4 months ago.

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


Liked

2 months ago.


Very good

4 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/...

Image  www.hardocp.com/...
Dec '12 AS SSD Benchmark Test Score

Dec '12 AS SSD Benchmark Test Score

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


Good

8 months ago.

one Best product for the Good Price


Good

9 months ago.

It's perfect!


Good

2 months ago.

Amazing. Just that.


Liked

6 months ago.

Comment 

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


Poor

19 months 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?


Liked

18 months ago.

Comment 

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


Very good

4 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

3 years ago.

Just the best 256G SSD for me!


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857 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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