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 73,721 user samples
49,734 User Benchmarks
Best Bench: 126% 152GB free
Worst Bench: 72% 147GB free (System drive)
Poor: 72% Great: 126%
SPEED RANK: 153rd / 976
23,987 User Benchmarks
Best Bench: 117% 215GB free
Worst Bench: 62% 53GB free
Poor: 62% Great: 117%
SPEED RANK: 188th / 976
Effective Speed
Effective SSD Speed
104 % Slightly faster effective speed.
+11%
93.7 %
Read
Avg. Sequential Read Speed
471 MB/s +3% 458 MB/s
Write
Avg. Sequential Write Speed
414 MB/s Slightly faster write speed.
+10%
376 MB/s
4K Read
Avg. 4K Random Read Speed
34.3 MB/s Slightly faster random read.
+14%
30.1 MB/s
4K Write
Avg. 4K Random Write Speed
96.6 MB/s Faster random write.
+16%
83.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
341 MB/s Slightly faster mixed IO speed.
+14%
299 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
45.1 MB/s Faster random mixed IO.
+17%
38.4 MB/s
SusWrite
Avg. Sustained Write Speed
356 MB/s Slightly faster sustained write speed.
+13%
314 MB/s
Read
Peak Sequential Read Speed
516 MB/s +1% 510 MB/s
Write
Peak Sequential Write Speed
488 MB/s +0% 486 MB/s
4K Read
Peak 4K Random Read Speed
44 MB/s Faster peak random read.
+21%
36.5 MB/s
4K Write
Peak 4K Random Write Speed
131 MB/s Slightly faster peak random write.
+11%
118 MB/s
Mixed
Peak Sequential Mixed IO Speed
385 MB/s Slightly faster peak mixed IO speed.
+6%
362 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
57.7 MB/s Faster peak random mixed IO.
+19%
48.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
479 MB/s 479 MB/s
Market Share
Based on 10,388,192 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.51 % Much higher market share.
+46%
0.35 %
Value
Value For Money
70.8 % Much better value.
+71%
41.3 %
User Rating
UBM User Rating
96 % Much more popular.
+52%
63 %
Price
Price (score)
$163 Much cheaper.
+44%
$289
Age
Newest
53 Months More recent.
+28%
74 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
353 MB/s Slightly faster peak deep queue write.
+5%
336 MB/s
AS-SSD Total
AS-SSD Total Score
1,279 Pts +4% 1,228 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
357 MB/s Hugely faster peak deep queue mixed IO.
+102%
177 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
338 MB/s +1% 334 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
298 MB/s Slightly faster deep queue write.
+12%
266 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
292 MB/s Hugely faster deep queue mixed IO.
+107%
141 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) December 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.
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 $370Nvidia GTX 1070 $330Samsung 850 Evo 250GB $63
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $210Samsung 850 Evo 500GB $90
Intel Core i5-8600K $249Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $125SanDisk Extreme 64GB $72
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $830SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
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