SamsungMZ-7KE256BW
SamsungMZ-7PD256BW

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

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

Real World Speed
Performance profile from 124,914 user samples
85,349 User Benchmarks
Best Bench: 125% 63GB free
Worst Bench: 72% 53GB free (System drive)
Poor: 72% Great: 125%
SPEED RANK: 199th / 1016
39,565 User Benchmarks
Best Bench: 116% 111GB free (System drive)
Worst Bench: 65% 59GB free (System drive)
Poor: 65% Great: 116%
SPEED RANK: 254th / 1016
Effective Speed
Effective SSD Speed
103 % Slightly faster effective speed.
+12%
92.6 %
Read
Avg. Sequential Read Speed
475 MB/s +4% 456 MB/s
Write
Avg. Sequential Write Speed
410 MB/s Slightly faster write speed.
+11%
371 MB/s
4K Read
Avg. 4K Random Read Speed
34.4 MB/s Slightly faster random read.
+14%
30.2 MB/s
4K Write
Avg. 4K Random Write Speed
92.9 MB/s Slightly faster random write.
+12%
82.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed
341 MB/s Slightly faster mixed IO speed.
+15%
297 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
44.8 MB/s Faster random mixed IO.
+16%
38.5 MB/s
SusWrite
Avg. Sustained Write Speed
353 MB/s Slightly faster sustained write speed.
+15%
308 MB/s
Read
Peak Sequential Read Speed
516 MB/s +1% 509 MB/s
Write
Peak Sequential Write Speed
492 MB/s +2% 483 MB/s
4K Read
Peak 4K Random Read Speed
44.3 MB/s Faster peak random read.
+22%
36.3 MB/s
4K Write
Peak 4K Random Write Speed
129 MB/s Slightly faster peak random write.
+11%
116 MB/s
Mixed
Peak Sequential Mixed IO Speed
389 MB/s Slightly faster peak mixed IO speed.
+8%
361 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
57.7 MB/s Faster peak random mixed IO.
+20%
47.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
484 MB/s +2% 474 MB/s
Market Share
Based on 21,681,288 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.33 % Much higher market share.
+65%
0.2 %
Value
Value For Money
7.43 % 12.2 % Much better value.
+64%
User Rating
UBM User Rating
60 % 64 % Slightly more popular.
+7%
Price
Price (score)
$224 $100 Much cheaper.
+55%
Age
Newest
66 Months More recent.
+24%
87 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s Slightly faster peak deep queue write.
+8%
333 MB/s
AS-SSD Total
AS-SSD Total Score
1285 Pts Slightly stronger server IO.
+5%
1,222 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
358 MB/s Hugely faster peak deep queue mixed IO.
+105%
175 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
334 MB/s +4% 321 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
290 MB/s Faster deep queue write.
+17%
248 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
293 MB/s Hugely faster deep queue mixed IO.
+111%
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) January 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.
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 i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $43
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $340Samsung 850 Pro 512GB $204
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $643SanDisk Ultra Fit 32GB $16
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