Average Bench: 83.7% (138th of 859)

Based on 16,608 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 16.3% 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 28.8MB/s
Avg. 4K Random Write Speed 78.5MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 52.2%. 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 199MB/s
Avg. 4K-64Thread Mixed IO Speed 53.9MB/s
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Average Bench

(Based on 16,608 samples)
Min Avg Max
355 Read 488 524
98.9 Write 359 493
157 Mixed 390 509
91.6% 412 MB/s
Min Avg Max
20 4K Read 28.8 36.4
39.8 4K Write 78.5 117
14.6 4K Mixed 22.1 28.6
114% 43.2 MB/s
Min Avg Max
26.5 DQ Read 199 373
64.4 DQ Write 188 319
16 DQ Mixed 53.9 89.8
78.7% 147 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
34GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 492
Write 467
Mixed 504
109% 488 MB/s
4K Read 31.8
4K Write 77
4K Mixed 25.8
122% 44.9 MB/s
DQ Read 30.7
DQ Write 161
DQ Mixed 73.8
63% 88.7 MB/s
157GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 518
Write 455
Mixed 495
109% 489 MB/s
4K Read 29
4K Write 102
4K Mixed 20.7
124% 50.5 MB/s
DQ Read 30.9
DQ Write 92.5
DQ Mixed 19.5
27% 47.6 MB/s
82GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 370
Write 354
Mixed 360
81% 361 MB/s
4K Read 28.4
4K Write 56.7
4K Mixed 17.1
95% 34.1 MB/s
DQ Read 26.8
DQ Write 133
DQ Mixed 63.7
54% 74.5 MB/s
82GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 368
Write 351
Mixed 364
81% 361 MB/s
4K Read 28
4K Write 57.7
4K Mixed 17.7
96% 34.5 MB/s
DQ Read 23.9
DQ Write 57.2
DQ Mixed 16.4
19% 32.5 MB/s
148GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 358
Write 246
Mixed 290
66% 298 MB/s
4K Read 21.9
4K Write 37.9
4K Mixed 18.8
77% 26.2 MB/s
DQ Read 160
DQ Write 129
DQ Mixed 48.8
63% 113 MB/s
16,608 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,838,645 SSDs tested.

 Prices

OutletPCUS $227.831 day ago.
EbayUS $299.006 mins ago.
AmazonUS $307.382 months ago.
Send price feedback
Typical 840 Pro 256GB Builds (Compare 3,319 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: 59% - Above average Total price: $1,358

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) September 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

3 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

5 months ago.

Very good.


Good

3 months ago.

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


Good

5 months ago.

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


Liked

3 months ago.


Good

9 months ago.

one Best product for the Good Price


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

10 months ago.

It's perfect!


Liked

7 months ago.

Comment 

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


Good

3 months ago.

Amazing. Just that.


Poor

20 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

19 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!


Your
opinion?
859 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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