Average Bench: 92.6% (168th of 956)

Based on 21,459 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 7.3% 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 137MB/s
Avg. 4K Random Mixed IO Speed 38.5MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 256GB is 56.9%. 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 288MB/s
Avg. Sustained Write Speed 299MB/s
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Average Bench

(Based on 21,459 samples)
Min Avg Max
329 Read 449 511
125 Write 362 485
192 Mixed 288 359
86.8 SusWrite 299 472
78.3% 349 MB/s
Min Avg Max
21.7 4K Read 30.3 36.9
42.2 4K Write 85.6 120
26.2 4K Mixed 38.5 47.9
141% 51.5 MB/s
Min Avg Max
156 DQ Read 333 385
109 DQ Write 256 335
41.9 DQ Mixed 137 174
145% 242 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
129GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 410 432 450 466 471 474 MB/s
Read 510
Write 489
Mixed 363
SusWrite 450
102% 453 MB/s
4K Read 35.8
4K Write 111
4K Mixed 48.3
175% 64.9 MB/s
DQ Read 382
DQ Write 308
DQ Mixed 177
178% 289 MB/s
143GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 440 439 444 441 449 438 MB/s
Read 500
Write 441
Mixed 372
SusWrite 442
99% 439 MB/s
4K Read 34.3
4K Write 108
4K Mixed 47.6
170% 63.2 MB/s
DQ Read 386
DQ Write 303
DQ Mixed 170
174% 286 MB/s
201GB free
Firmware: DXM05B0Q
SusWrite @10s intervals: 338 364 401 427 430 429 MB/s
Read 476
Write 434
Mixed 339
SusWrite 398
92% 412 MB/s
4K Read 31.3
4K Write 122
4K Mixed 47.5
173% 67 MB/s
DQ Read 383
DQ Write 314
DQ Mixed 170
176% 289 MB/s
132GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 251 315 279 262 371 361 MB/s
Read 385
Write 361
Mixed 254
SusWrite 306
73% 327 MB/s
4K Read 24.4
4K Write 64.8
4K Mixed 34.4
115% 41.2 MB/s
DQ Read 31.6
DQ Write 83.8
DQ Mixed 40.8
36% 52.1 MB/s
21,459 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,001,532 SSDs tested.

 Prices

Approx. $203 @ launch in Oct '12
EbayUS $28915 mins
OutletPCUS $3055 months
AmazonUS $31828 mins
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Typical 840 Pro 256GB Builds (Compare 4,750 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: 58% - Above average Total price: $1,320

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

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  • - 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.
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Solid State Drive Rankings (Price vs Performance) August 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]

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 5 years ago.

Good (edit your comment) Add link

14 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


Disliked

16 months ago.


Good

3 months ago.

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


Good

16 months ago.

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


Average

18 days 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

14 months ago.


Liked

18 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/...

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


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

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

4 years ago.

Just the best 256G SSD for me!


Your
opinion?
956 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

 Best User Rated

The Best.
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Intel Core i7-8700K $330Nvidia GTX 1070 $370Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $240AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
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