SamsungMZ-7KE256BW
SamsungMZ-75E250B

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

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

Real World Speed
Performance profile from 530,285 user samples
61,260 User Benchmarks
Best Bench: 127% 189GB free
Worst Bench: 69% 41GB free (System drive)
Poor: 69% Great: 127%
SPEED RANK: 192nd / 1011
469,025 User Benchmarks
Best Bench: 124% 149GB free
Worst Bench: 76% 23GB free (System drive)
Poor: 76% Great: 124%
SPEED RANK: 183rd / 1011
Effective Speed
Effective SSD Speed
104 % 107 % +3%
Read
Avg. Sequential Read Speed
472 MB/s 472 MB/s
Write
Avg. Sequential Write Speed
417 MB/s 443 MB/s Slightly faster write speed.
+6%
4K Read
Avg. 4K Random Read Speed
34.2 MB/s 40.8 MB/s Faster random read.
+19%
4K Write
Avg. 4K Random Write Speed
94.6 MB/s 102 MB/s Slightly faster random write.
+8%
Mixed
Avg. Sequential Mixed IO Speed
341 MB/s 372 MB/s Slightly faster mixed IO speed.
+9%
4K Mixed
Avg. 4K Random Mixed IO Speed
45.1 MB/s 54.6 MB/s Faster random mixed IO.
+21%
SusWrite
Avg. Sustained Write Speed
359 MB/s Much faster sustained write speed.
+42%
253 MB/s
Read
Peak Sequential Read Speed
517 MB/s +2% 507 MB/s
Write
Peak Sequential Write Speed
491 MB/s 492 MB/s +0%
4K Read
Peak 4K Random Read Speed
44.4 MB/s 48.2 MB/s Slightly faster peak random read.
+9%
4K Write
Peak 4K Random Write Speed
127 MB/s 133 MB/s +5%
Mixed
Peak Sequential Mixed IO Speed
387 MB/s 412 MB/s Slightly faster peak mixed IO speed.
+6%
4K Mixed
Peak 4K Random Mixed IO Speed
59.1 MB/s 65.4 MB/s Slightly faster peak random mixed IO.
+11%
SusWrite
Peak Sequential Sustained Write 60s Average
486 MB/s Much faster peak sustained write speed.
+48%
328 MB/s
Market Share
Based on 16,818,428 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.4 % 2.71 % Hugely higher market share.
+577%
Value
Value For Money
8.3 % 15.5 % Hugely better value.
+87%
User Rating
UBM User Rating
99 % 122 % More popular.
+23%
Price
Price (score)
$195 $86 Much cheaper.
+56%
Age
Newest
61 Months 56 Months Slightly more recent.
+8%
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s 361 MB/s +0%
AS-SSD Total
AS-SSD Total Score
1,283 Pts 1,292 Pts +1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
359 MB/s 368 MB/s +3%
ADQ Read
Avg. 4K-64Thread Read Speed
332 MB/s 347 MB/s +5%
ADQ Write
Avg. 4K-64Thread Write Speed
293 MB/s 312 MB/s Slightly faster deep queue write.
+6%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
294 MB/s 320 MB/s Slightly faster deep queue mixed IO.
+9%
Capacity
Capacity
256GB 250GB
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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 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]

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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 i5-9400F $143AMD RX 580 $172Samsung 850 Evo 250GB $86
AMD Ryzen 5 3600 $198Nvidia GTX 1660 $220Samsung 850 Evo 500GB $103
Intel Core i5-9600K $219AMD RX Vega 56 $300Samsung 850 Pro 256GB $195
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $695SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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