SamsungMZ-7KE256BW
SamsungMZ-75E250B

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

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

Real World Speed
Performance profile from 743,427 user samples
85,454 User Benchmarks
Best Bench: 124% 225GB free
Worst Bench: 70% 116GB free (System drive)
Poor: 70% Great: 124%
SPEED RANK: 214th / 1030
657,973 User Benchmarks
Best Bench: 124% 192GB free
Worst Bench: 75% 16GB free (System drive)
Poor: 75% Great: 124%
SPEED RANK: 205th / 1030
Effective Speed
Effective SSD Speed
102 % 104 % +2%
Read
Avg. Sequential Read Speed
471 MB/s 472 MB/s +0%
Write
Avg. Sequential Write Speed
412 MB/s 435 MB/s Slightly faster write speed.
+6%
4K Read
Avg. 4K Random Read Speed
33.6 MB/s 40.2 MB/s Faster random read.
+20%
4K Write
Avg. 4K Random Write Speed
89 MB/s 95.9 MB/s Slightly faster random write.
+8%
Mixed
Avg. Sequential Mixed IO Speed
338 MB/s 371 MB/s Slightly faster mixed IO speed.
+10%
4K Mixed
Avg. 4K Random Mixed IO Speed
43.8 MB/s 52.6 MB/s Faster random mixed IO.
+20%
SusWrite
Avg. Sustained Write Speed
355 MB/s Much faster sustained write speed.
+39%
255 MB/s
Read
Peak Sequential Read Speed
517 MB/s +2% 507 MB/s
Write
Peak Sequential Write Speed
491 MB/s 493 MB/s +0%
4K Read
Peak 4K Random Read Speed
43.5 MB/s 47.8 MB/s Slightly faster peak random read.
+10%
4K Write
Peak 4K Random Write Speed
122 MB/s 126 MB/s +3%
Mixed
Peak Sequential Mixed IO Speed
381 MB/s 417 MB/s Slightly faster peak mixed IO speed.
+9%
4K Mixed
Peak 4K Random Mixed IO Speed
57.1 MB/s 64.4 MB/s Faster peak random mixed IO.
+13%
SusWrite
Peak Sequential Sustained Write 60s Average
484 MB/s Much faster peak sustained write speed.
+47%
329 MB/s
Market Share
Based on 29,766,422 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.24 % 1.72 % Hugely higher market share.
+617%
Value
Value For Money
9.45 % 15.2 % Much better value.
+61%
User Rating
UBM User Rating
60 % 71 % More popular.
+18%
Price
Price (score)
$160 $85 Much cheaper.
+47%
Age
Newest
73 Months 68 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 386 MB/s
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s 361 MB/s +0%
AS-SSD Total
AS-SSD Total Score
1,276 Pts 1,286 Pts +1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
357 MB/s 368 MB/s +3%
ADQ Read
Avg. 4K-64Thread Read Speed
340 MB/s 346 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed
289 MB/s 298 MB/s +3%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
295 MB/s 311 MB/s Slightly faster deep queue mixed IO.
+5%
Capacity
Capacity
256GB 250GB
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 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders[Dec '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) August 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]

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 i5-9600K $192Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $46
Intel Core i5-9400F $153Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $335Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $47
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $60SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback