SamsungMZ-7KE256BW
SamsungMZ-7PD256BW

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

Real World Speed
Performance profile from 91,032 user samples
59,385 User Benchmarks
Best Bench: 125% 171GB free (System drive)
Worst Bench: 67% 19GB free (System drive)
Poor: 67% Great: 125%
SPEED RANK: 177th / 996
31,647 User Benchmarks
Best Bench: 118% 210GB free (System drive)
Worst Bench: 62% 191GB free (System drive)
Poor: 62% Great: 118%
SPEED RANK: 215th / 996
Effective Speed
Effective SSD Speed
103 % Slightly faster effective speed.
+11%
92.9 %
Read
Avg. Sequential Read Speed
467 MB/s +3% 454 MB/s
Write
Avg. Sequential Write Speed
413 MB/s Slightly faster write speed.
+14%
362 MB/s
4K Read
Avg. 4K Random Read Speed
33.2 MB/s Slightly faster random read.
+9%
30.4 MB/s
4K Write
Avg. 4K Random Write Speed
92.1 MB/s Slightly faster random write.
+8%
85 MB/s
Mixed
Avg. Sequential Mixed IO Speed
337 MB/s Faster mixed IO speed.
+16%
291 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
43.7 MB/s Slightly faster random mixed IO.
+13%
38.6 MB/s
SusWrite
Avg. Sustained Write Speed
360 MB/s Faster sustained write speed.
+21%
298 MB/s
Read
Peak Sequential Read Speed
517 MB/s +2% 508 MB/s
Write
Peak Sequential Write Speed
489 MB/s +1% 486 MB/s
4K Read
Peak 4K Random Read Speed
43.5 MB/s Faster peak random read.
+18%
36.9 MB/s
4K Write
Peak 4K Random Write Speed
129 MB/s Slightly faster peak random write.
+8%
119 MB/s
Mixed
Peak Sequential Mixed IO Speed
387 MB/s Slightly faster peak mixed IO speed.
+8%
360 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
56.9 MB/s Faster peak random mixed IO.
+18%
48.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
484 MB/s +1% 479 MB/s
Market Share
Based on 13,721,910 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.44 % Much higher market share.
+57%
0.28 %
Value
Value For Money
106 % Better value.
+16%
91.6 %
User Rating
UBM User Rating
98 % Much more popular.
+53%
64 %
Price
Price (score)
$93 Slightly cheaper.
+6%
$99
Age
Newest
57 Months More recent.
+27%
78 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
355 MB/s Slightly faster peak deep queue write.
+6%
334 MB/s
AS-SSD Total
AS-SSD Total Score
1,278 Pts +4% 1228 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
358 MB/s Hugely faster peak deep queue mixed IO.
+106%
174 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
339 MB/s +1% 336 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
300 MB/s Slightly faster deep queue write.
+15%
261 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
297 MB/s Hugely faster deep queue mixed IO.
+114%
139 MB/s
Capacity
Capacity
256GB 256GB
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The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 SSDrivePro]

MORE DETAILS

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]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) April 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.
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.

UserBenchmark of the month

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.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $366Nvidia GTX 1070 $379Samsung 850 Evo 250GB $100
AMD Ryzen 5 2600 $159Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $80
AMD Ryzen 5 1600 $115Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $93
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $95SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $711SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $100SanDisk Ultra Fit 32GB $12
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