Average Bench: 92% (257th of 1021)

Based on 46,951 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 8.0% 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 141MB/s
Avg. 4K Random Mixed IO Speed 38.2MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 51.7%. 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 295MB/s
Avg. Sustained Write Speed 300MB/s
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Average Bench

(Based on 46,951 samples)
Min Avg Max
339 Read 457 510
130 Write 362 483
208 Mixed 295 361
83.1 SusWrite 300 468
79.2% 353 MB/s
Min Avg Max
22.5 4K Read 30.3 36.1
41.4 4K Write 80.4 116
26.6 4K Mixed 38.2 47.1
137% 49.6 MB/s
Min Avg Max
208 DQ Read 335 385
111 DQ Write 253 332
87 DQ Mixed 141 175
147% 243 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
89GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 430 436 448 461 464 463 MB/s
Read 479
Write 462
Mixed 317
SusWrite 450
96% 427 MB/s
4K Read 28
4K Write 75.2
4K Mixed 37.6
130% 46.9 MB/s
DQ Read 369
DQ Write 303
DQ Mixed 140
158% 271 MB/s
234GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 341 352 352 352 358 358 MB/s
Read 378
Write 269
Mixed 303
SusWrite 352
73% 325 MB/s
4K Read 32.9
4K Write 49.6
4K Mixed 37.9
125% 40.1 MB/s
DQ Read 238
DQ Write 94.3
DQ Mixed 130
106% 154 MB/s
105GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 226 226 219 214 206 214 MB/s
Read 357
Write 326
Mixed 234
SusWrite 218
64% 284 MB/s
4K Read 26.1
4K Write 50.4
4K Mixed 32
107% 36.2 MB/s
DQ Read 198
DQ Write 124
DQ Mixed 108
94% 143 MB/s
46,951 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 26,444,441 SSDs tested.

 Prices

Approx. $203 @ launch in Oct '12
OutletPCUS $1005 months
EbayUS $21011 mins
AmazonUS $27120 mins
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Typical 840 Pro 256GB Builds (Compare 9,230 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 52%
Yacht
Desktop
Desktop 75%
Battleship
Workstation
Workstation 58%
Gunboat

Motherboard: Asus MAXIMUS VI HERO - $190

EDIT WITH CUSTOM PC BUILDER Value: 46% - Average Total price: $978

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.
  • - GPU tests include: six 3D game simulations.
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Solid State Drive Rankings (Price vs Performance) May 2020 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 7 years ago.

Good (edit your comment) Add link

1 month 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

14 months ago.

Owning it for almost 6 Years, still running very fast


Good

2 years ago.

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


Good

3 years ago.

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


Average

22 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

2 years ago.


Excellent

20 days ago.

Comment 

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


Poor

4 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

6 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

4 years ago.

Comment 

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


Very good

7 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

6 years ago.

Just the best 256G SSD for me!


Your
opinion?
1021 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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