Average Bench: 83% (144th of 848)

Based on 9,987 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 16.9% 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 28.5MB/s
Avg. 4K Random Write Speed 74.7MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 53.6%. 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 191MB/s
Avg. 4K-64Thread Mixed IO Speed 53.6MB/s
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Average Bench

(Based on 9,987 samples)
Min Avg Max
359 Read 492 523
108 Write 360 491
164 Mixed 397 509
92.5% 416 MB/s
Min Avg Max
19.5 4K Read 28.5 36.3
40.7 4K Write 74.7 118
14.8 4K Mixed 22 28.5
111% 41.7 MB/s
Min Avg Max
24 DQ Read 191 379
60.2 DQ Write 189 315
15.5 DQ Mixed 53.6 91.3
77.7% 144 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
66GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 512
Write 385
Mixed 424
98% 440 MB/s
4K Read 32.4
4K Write 83.4
4K Mixed 22.2
122% 46 MB/s
DQ Read 31.4
DQ Write 75.7
DQ Mixed 19.8
25% 42.3 MB/s
185GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 511
Write 429
Mixed 499
107% 480 MB/s
4K Read 20.6
4K Write 36.6
4K Mixed 19.8
76% 25.7 MB/s
DQ Read 157
DQ Write 134
DQ Mixed 70.6
73% 121 MB/s
99GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 514
Write 435
Mixed 447
104% 465 MB/s
4K Read 14.8
4K Write 21
4K Mixed 14.4
52% 16.7 MB/s
DQ Read 330
DQ Write 220
DQ Mixed 68.4
107% 206 MB/s
9,987 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,359,232 SSDs tested.

 Prices

AmazonUS $224.013 months ago.
EbayUS $245.006 mins ago.
OutletPCUS $257.832 hrs ago.
Send price feedback
Typical 840 Pro 256GB Builds (Compare 2,154 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 - $179

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $1,243

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) March 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.

Poor (edit your comment) Add link

11 days 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


Very good

3 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

1 month ago.

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


Poor

27 days ago.

Very good.


Good

1 month ago.

ok


Good

3 months ago.

the best


Good

1 month ago.

good ssd


Good

3 months ago.

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


Good

3 months ago.

one Best product for the Good Price


Good

4 months ago.

It's perfect!


Good

4 months ago.

Amazing. Just that.


Liked

1 month ago.

Comment 

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


Good

1 month ago.

perfect


Poor

14 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

13 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

2 years ago.

Just the best 256G SSD for me!


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848 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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