Average Bench: 82.4% (156th of 853)

Based on 14,224 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 17.5% 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 29.1MB/s
Avg. 4K Random Write Speed 77.6MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 53.7%. 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 197MB/s
Avg. 4K-64Thread Mixed IO Speed 54.1MB/s
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Average Bench

(Based on 14,224 samples)
Min Avg Max
356 Read 489 523
106 Write 343 491
166 Mixed 379 508
89.6% 404 MB/s
Min Avg Max
20.5 4K Read 29.1 36.3
35.8 4K Write 77.6 116
14.1 4K Mixed 21.8 28.6
113% 42.8 MB/s
Min Avg Max
25.3 DQ Read 197 369
61.3 DQ Write 186 318
16.5 DQ Mixed 54.1 89.6
78.2% 146 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
170GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 522
Write 443
Mixed 509
110% 491 MB/s
4K Read 36.3
4K Write 112
4K Mixed 29.8
152% 59.3 MB/s
DQ Read 322
DQ Write 306
DQ Mixed 92.8
130% 240 MB/s
54GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 512
Write 238
Mixed 325
79% 359 MB/s
4K Read 26
4K Write 45.2
4K Mixed 19.7
89% 30.3 MB/s
DQ Read 223
DQ Write 137
DQ Mixed 65.1
79% 142 MB/s
14GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 464
Write 110
Mixed 164
53% 246 MB/s
4K Read 26.6
4K Write 103
4K Mixed 15.6
115% 48.3 MB/s
DQ Read 77.8
DQ Write 147
DQ Mixed 56.5
59% 93.8 MB/s
92GB free
Firmware: DXM03B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 354
Write 200
Mixed 191
55% 249 MB/s
4K Read 28.4
4K Write 53.5
4K Mixed 22.1
100% 34.6 MB/s
DQ Read 187
DQ Write 124
DQ Mixed 55.6
68% 122 MB/s
14,224 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,087,090 SSDs tested.

 Prices

OutletPCUS $267.8317 hrs ago.
EbayUS $299.9911 mins ago.
AmazonUS $307.382 days ago.
Send price feedback
Typical 840 Pro 256GB Builds (Compare 2,744 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: 58% - Above average Total price: $1,415

Popular 840 Pro 256GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

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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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Solid State Drive Rankings (Price vs Performance) June 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

8 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

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

19 days ago.

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


Poor

2 months ago.

Very good.


Liked

30 days ago.


Good

2 months ago.

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


Good

6 months ago.

one Best product for the Good Price


Good

8 months ago.

It's perfect!


Good

28 days ago.

Amazing. Just that.


Liked

4 months ago.

Comment 

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


Poor

18 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

17 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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853 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.

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