Average Bench: 92.2% (228th of 1000)

Based on 34,020 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 7.8% 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-64Thread Mixed IO Speed 139MB/s
Avg. 4K Random Mixed IO Speed 37.6MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 59.2%. This is a relatively wide range which indicates that the Samsung 840 Pro 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 292MB/s
Avg. Sustained Write Speed 310MB/s
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Average Bench

(Based on 34,020 samples)
Min Avg Max
339 Read 452 509
137 Write 370 484
206 Mixed 292 359
84.9 SusWrite 310 480
79.8% 356 MB/s
Min Avg Max
20.2 4K Read 29.8 36.6
40.1 4K Write 81.9 117
25.2 4K Mixed 37.6 47.8
137% 49.8 MB/s
Min Avg Max
33.1 DQ Read 329 384
110 DQ Write 261 334
42.6 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%
212GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 493 493 494 494 494 494 MB/s
Read 513
Write 421
Mixed 377
SusWrite 494
102% 451 MB/s
4K Read 37.2
4K Write 127
4K Mixed 50.9
189% 71.8 MB/s
DQ Read 383
DQ Write 313
DQ Mixed 173
177% 289 MB/s
169GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 341 305 360 366 367 366 MB/s
Read 376
Write 366
Mixed 279
SusWrite 351
77% 343 MB/s
4K Read 33.9
4K Write 84.4
4K Mixed 42.2
150% 53.5 MB/s
DQ Read 250
DQ Write 217
DQ Mixed 135
128% 200 MB/s
204GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 376 393 408 390 391 366 MB/s
Read 263
Write 260
Mixed 179
SusWrite 387
62% 272 MB/s
4K Read 10.9
4K Write 29.8
4K Mixed 16.5
53% 19.1 MB/s
DQ Read 30.2
DQ Write 80.1
DQ Mixed 38.8
34% 49.7 MB/s
34,020 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 14,373,882 SSDs tested.

 Prices

Approx. $203 @ launch in Oct '12
AmazonUS $903 days
OutletPCUS $9913 hrs
EbayUS $11131 mins
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Typical 840 Pro 256GB Builds (Compare 6,115 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 72%
Battleship
Workstation
Workstation 53%
Yacht

Motherboard: Asus MAXIMUS VI HERO - $190

EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: $1,094

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

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  • - CPU tests include: integer, floating and string.
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Solid State Drive Rankings (Price vs Performance) May 2019 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

23 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


Excellent

1 month ago.

Owning it for almost 6 Years, still running very fast


Good

12 months ago.

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


Good

2 years ago.

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


Average

9 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

24 months ago.


Liked

2 years ago.

Comment 

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


Poor

3 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?


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


Liked

3 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

5 years ago.

Just the best 256G SSD for me!


Your
opinion?
1000 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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