Average Bench: 85.1% (130th of 863)

Based on 17,401 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 14.8% 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 28.9MB/s
Avg. 4K Random Write Speed 80MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 53.8%. 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 204MB/s
Avg. 4K-64Thread Mixed IO Speed 54.2MB/s
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Average Bench

(Based on 17,401 samples)
Min Avg Max
370 Read 491 524
104 Write 369 499
162 Mixed 401 511
93.5% 421 MB/s
Min Avg Max
18.5 4K Read 28.9 36.6
36.1 4K Write 80 118
14.5 4K Mixed 22.4 29.1
115% 43.8 MB/s
Min Avg Max
25.3 DQ Read 204 375
69.5 DQ Write 196 324
15.7 DQ Mixed 54.2 91
80.7% 151 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
42GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 509
Write 422
Mixed 436
102% 456 MB/s
4K Read 30.7
4K Write 72.8
4K Mixed 24.6
116% 42.7 MB/s
DQ Read 324
DQ Write 257
DQ Mixed 70.7
113% 217 MB/s
52GB free
Firmware: DXM04B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 516
Write 354
Mixed 391
93% 420 MB/s
4K Read 32.7
4K Write 96.8
4K Mixed 25.4
133% 51.6 MB/s
DQ Read 33.4
DQ Write 105
DQ Mixed 22.5
31% 53.6 MB/s
173GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 507
Write 479
Mixed 490
110% 492 MB/s
4K Read 25.2
4K Write 49.2
4K Mixed 20.9
91% 31.8 MB/s
DQ Read 75.3
DQ Write 79.3
DQ Mixed 34.2
38% 62.9 MB/s
197GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 492
Write 469
Mixed 489
108% 483 MB/s
4K Read 12.2
4K Write 45.6
4K Mixed 10.4
56% 22.7 MB/s
DQ Read 15.3
DQ Write 179
DQ Mixed 12.1
35% 68.7 MB/s
17,401 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 4,485,966 SSDs tested.

 Prices

EbayUS $199.002 mins ago.
OutletPCUS $305.3315 hrs ago.
AmazonUS $307.385 months ago.
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Typical 840 Pro 256GB Builds (Compare 2,736 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 74%
Battleship
Workstation
Workstation 57%
Gunboat

Motherboard: Asus MAXIMUS VI HERO - $190

EDIT WITH CUSTOM PC BUILDER Value: 70% - Very good Total price: $1,390

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.
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Solid State Drive Rankings (Price vs Performance) November 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 5 years ago.

Good (edit your comment) Add link

5 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

7 months ago.

Very good.


Good

5 months ago.

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


Good

7 months ago.

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


Liked

5 months ago.


Good

11 months ago.

one Best product for the Good Price


Good

12 months ago.

It's perfect!


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


Liked

9 months ago.

Comment 

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


Good

5 months ago.

Amazing. Just that.


Poor

22 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

22 months ago.

Comment 

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


Very good

5 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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863 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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