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 90,777 user samples
58,542 User Benchmarks
Best Bench: 128% 147GB free
Worst Bench: 73% 40GB free (System drive)
Poor: 73% Great: 128%
SPEED RANK: 167th / 991
32,235 User Benchmarks
Best Bench: 116% 236GB free
Worst Bench: 61% 66GB free (System drive)
Poor: 61% Great: 116%
SPEED RANK: 223rd / 991
Effective Speed
Effective SSD Speed
105 % Slightly faster effective speed.
+14%
91.9 %
Read
Avg. Sequential Read Speed
474 MB/s +5% 453 MB/s
Write
Avg. Sequential Write Speed
414 MB/s Faster write speed.
+16%
357 MB/s
4K Read
Avg. 4K Random Read Speed
34.3 MB/s Slightly faster random read.
+13%
30.3 MB/s
4K Write
Avg. 4K Random Write Speed
95.1 MB/s Slightly faster random write.
+14%
83.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed
339 MB/s Faster mixed IO speed.
+17%
289 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
44.8 MB/s Faster random mixed IO.
+17%
38.2 MB/s
SusWrite
Avg. Sustained Write Speed
369 MB/s Faster sustained write speed.
+25%
296 MB/s
Read
Peak Sequential Read Speed
516 MB/s +1% 510 MB/s
Write
Peak Sequential Write Speed
488 MB/s +1% 483 MB/s
4K Read
Peak 4K Random Read Speed
44.5 MB/s Faster peak random read.
+22%
36.5 MB/s
4K Write
Peak 4K Random Write Speed
132 MB/s Slightly faster peak random write.
+14%
116 MB/s
Mixed
Peak Sequential Mixed IO Speed
384 MB/s Slightly faster peak mixed IO speed.
+7%
358 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
60.3 MB/s Faster peak random mixed IO.
+26%
47.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
483 MB/s +2% 472 MB/s
Market Share
Based on 12,089,043 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.49 % Much higher market share.
+75%
0.28 %
Value
Value For Money
71.1 % 78.4 % Slightly better value.
+10%
User Rating
UBM User Rating
94 % Much more popular.
+49%
63 %
Price
Price (score)
$163 $120 Cheaper.
+26%
Age
Newest
55 Months More recent.
+28%
76 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
356 MB/s Slightly faster peak deep queue write.
+7%
334 MB/s
AS-SSD Total
AS-SSD Total Score
1,284 Pts +5% 1,224 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
337 MB/s +3% 327 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
298 MB/s Faster deep queue write.
+17%
254 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
297 MB/s Hugely faster deep queue mixed IO.
+120%
135 MB/s
Capacity
Capacity
256GB 256GB
ADVERTISEMENT

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) February 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]

ADVERTISEMENT

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 $360Nvidia GTX 1070 $336Samsung 850 Evo 250GB $78
AMD Ryzen 5 1600 $149Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $90
Intel Core i5-8600K $259Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $750SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $126SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback