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 344,238 user samples
297,917 User Benchmarks
Best Bench: 124% 138GB free
Worst Bench: 73% 22GB free (System drive)
Poor: 73% Great: 124%
SPEED RANK: 142nd / 956
46,321 User Benchmarks
Best Bench: 126% 132GB free
Worst Bench: 78% 107GB free (System drive)
Poor: 78% Great: 126%
SPEED RANK: 141st / 956
Effective Speed
Effective SSD Speed
105 % 105 % +0%
Read
Avg. Sequential Read Speed
468 MB/s 475 MB/s +1%
Write
Avg. Sequential Write Speed
437 MB/s +5% 417 MB/s
4K Read
Avg. 4K Random Read Speed
40.1 MB/s Faster random read.
+18%
34.1 MB/s
4K Write
Avg. 4K Random Write Speed
99.4 MB/s +2% 97 MB/s
Mixed
Avg. Sequential Mixed IO Speed
370 MB/s Slightly faster mixed IO speed.
+9%
340 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.3 MB/s Faster random mixed IO.
+18%
45.3 MB/s
SusWrite
Avg. Sustained Write Speed
248 MB/s 364 MB/s Much faster sustained write speed.
+47%
Read
Peak Sequential Read Speed
507 MB/s 517 MB/s +2%
Write
Peak Sequential Write Speed
491 MB/s +0% 490 MB/s
4K Read
Peak 4K Random Read Speed
48.2 MB/s Slightly faster peak random read.
+8%
44.5 MB/s
4K Write
Peak 4K Random Write Speed
132 MB/s +2% 130 MB/s
Mixed
Peak Sequential Mixed IO Speed
413 MB/s Slightly faster peak mixed IO speed.
+8%
382 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
65.3 MB/s Slightly faster peak random mixed IO.
+12%
58.5 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
324 MB/s 480 MB/s Much faster peak sustained write speed.
+48%
Market Share
Based on 8,555,160 SSDs tested.
Market Share
Market Share (trailing 30 days)
4.74 % Hugely higher market share.
+641%
0.64 %
Value
Value For Money
114 % Much better value.
+38%
82.6 %
User Rating
UBM User Rating
126 % Much more popular.
+33%
95 %
Price
Price (score)
$85 Much cheaper.
+37%
$134
Age
Newest
45 Months Slightly more recent.
+10%
50 Months
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s 388 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed
354 MB/s 354 MB/s
AS-SSD Total
AS-SSD Total Score
1,286 Pts +0% 1,280 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
365 MB/s +2% 358 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
344 MB/s 344 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
313 MB/s +3% 305 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
317 MB/s +5% 303 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]

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Solid State Drive Rankings (Price vs Performance) September 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 $344Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $110
Intel Core i5-8600K $245AMD RX 480 $280Samsung 850 Pro 256GB $134
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $150SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $899SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $160SanDisk Ultra Fit 32GB $11
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