Average Bench: 91.8% (193rd of 964)

Based on 23,391 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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Excellent average bench

The Samsung 840 Pro 256GB averaged just 8.1% 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-64Thread Mixed IO Speed 139MB/s
Avg. 4K Random Mixed IO Speed 38.6MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 54.7%. This is a relatively wide range which indicates that the Samsung 840 Pro 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 284MB/s
Avg. Sequential Mixed IO Speed 290MB/s
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Average Bench

(Based on 23,391 samples)
Min Avg Max
332 Read 453 510
128 Write 357 484
194 Mixed 290 363
76.5 SusWrite 284 478
77.5% 346 MB/s
Min Avg Max
21.8 4K Read 30.3 36.6
41.7 4K Write 84.5 119
26 4K Mixed 38.6 47.9
140% 51.1 MB/s
Min Avg Max
93.3 DQ Read 333 386
116 DQ Write 257 331
70.8 DQ Mixed 139 175
147% 243 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
197GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 487 489 490 492 492 490 MB/s
Read 514
Write 494
Mixed 342
SusWrite 490
104% 460 MB/s
4K Read 37.5
4K Write 121
4K Mixed 48.2
183% 68.9 MB/s
DQ Read 381
DQ Write 337
DQ Mixed 150
170% 289 MB/s
212GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 456 463 477 486 486 487 MB/s
Read 506
Write 488
Mixed 351
SusWrite 476
102% 455 MB/s
4K Read 36.1
4K Write 112
4K Mixed 48.5
176% 65.6 MB/s
DQ Read 376
DQ Write 338
DQ Mixed 169
178% 294 MB/s
72GB free (System drive)
Firmware: DXM0
SusWrite @10s intervals: 185 171 177 176 167 172 MB/s
Read 505
Write 404
Mixed 286
SusWrite 175
76% 342 MB/s
4K Read 37.4
4K Write 131
4K Mixed 47.4
187% 71.8 MB/s
DQ Read 381
DQ Write 274
DQ Mixed 146
158% 267 MB/s
23,391 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,690,586 SSDs tested.

 Prices

Approx. $203 @ launch in Oct '12
EbayUS $28949 mins
OutletPCUS $3058 months
AmazonUS $32412 mins
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Typical 840 Pro 256GB Builds (Compare 4,456 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 71%
Battleship
Workstation
Workstation 52%
Yacht

Motherboard: Asus MAXIMUS VI HERO - $190

EDIT WITH CUSTOM PC BUILDER Value: 61% - Good Total price: $1,179

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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) November 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Comments

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

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

Added 6 years ago.

Good (edit your comment) Add link

17 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


Good

6 months ago.

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


Good

19 months ago.

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


Average

3 months ago.

Need to improve a lot on Research and Development . Please don't fool people with your small small improvements .With R&D U can do much better.


Liked

17 months ago.


Liked

21 months ago.

Comment 

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


Very good

5 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/...

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


Poor

2 years 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

2 years ago.

Comment 

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


Very good

6 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

4 years ago.

Just the best 256G SSD for me!


Your
opinion?
964 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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