SamsungMZ-75E250B
SamsungMZ-7KE256BW

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

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

Real World Speed
Performance profile from 394,418 user samples
344,684 User Benchmarks
Best Bench: 124% 224GB free
Worst Bench: 75% 18GB free
Poor: 75% Great: 124%
SPEED RANK: 149th / 976
49,734 User Benchmarks
Best Bench: 126% 152GB free
Worst Bench: 72% 147GB free (System drive)
Poor: 72% Great: 126%
SPEED RANK: 153rd / 976
Effective Speed
Effective SSD Speed
105 % +1% 104 %
Read
Avg. Sequential Read Speed
471 MB/s 471 MB/s
Write
Avg. Sequential Write Speed
440 MB/s Slightly faster write speed.
+6%
414 MB/s
4K Read
Avg. 4K Random Read Speed
40.1 MB/s Faster random read.
+17%
34.3 MB/s
4K Write
Avg. 4K Random Write Speed
99.9 MB/s +3% 96.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed
372 MB/s Slightly faster mixed IO speed.
+9%
341 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.6 MB/s Faster random mixed IO.
+19%
45.1 MB/s
SusWrite
Avg. Sustained Write Speed
249 MB/s 356 MB/s Much faster sustained write speed.
+43%
Read
Peak Sequential Read Speed
507 MB/s 516 MB/s +2%
Write
Peak Sequential Write Speed
492 MB/s +1% 488 MB/s
4K Read
Peak 4K Random Read Speed
48.2 MB/s Slightly faster peak random read.
+10%
44 MB/s
4K Write
Peak 4K Random Write Speed
131 MB/s 131 MB/s
Mixed
Peak Sequential Mixed IO Speed
412 MB/s Slightly faster peak mixed IO speed.
+7%
385 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
65.4 MB/s Slightly faster peak random mixed IO.
+13%
57.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
325 MB/s 479 MB/s Much faster peak sustained write speed.
+47%
Market Share
Based on 10,387,541 SSDs tested.
Market Share
Market Share (trailing 30 days)
3.92 % Hugely higher market share.
+669%
0.51 %
Value
Value For Money
142 % Hugely better value.
+101%
70.8 %
User Rating
UBM User Rating
126 % Much more popular.
+31%
96 %
Price
Price (score)
$63 Much cheaper.
+61%
$163
Age
Newest
48 Months Slightly more recent.
+9%
53 Months
DQ Read
Peak 4K-64Thread Read Speed
387 MB/s 388 MB/s +0%
DQ Write
Peak 4K-64Thread Write Speed
358 MB/s +1% 353 MB/s
AS-SSD Total
AS-SSD Total Score
1,290 Pts +1% 1,279 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
367 MB/s +3% 357 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
345 MB/s +2% 338 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
313 MB/s Slightly faster deep queue write.
+5%
298 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
316 MB/s Slightly faster deep queue mixed IO.
+8%
292 MB/s
Capacity
Capacity
250GB 256GB
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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

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

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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