SamsungMZ-7KE256BW
Pm991

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

  

Release date ≈ Q4 2019.

Real World Speed
Performance profile from 123,872 user samples
122,215 User Benchmarks
Best Bench: 123% 49GB free
Worst Bench: 70% 133GB free (System drive)
Poor: 70% Great: 123%
SPEED RANK: 236th / 1058
1,657 User Benchmarks
Best Bench: 191% 391GB free
Worst Bench: 72% 133GB free (System drive)
Poor: 72% Great: 191%
SPEED RANK: 174th / 1058
Effective Speed
Effective SSD Speed
102 % 121 % Faster effective speed.
+19%
Read
Avg. Sequential Read Speed
474 MB/s 952 MB/s Hugely faster read speed.
+101%
Write
Avg. Sequential Write Speed
401 MB/s 512 MB/s Faster write speed.
+28%
4K Read
Avg. 4K Random Read Speed
33.3 MB/s +0% 33.2 MB/s
4K Write
Avg. 4K Random Write Speed
87.3 MB/s +4% 84 MB/s
Mixed
Avg. Sequential Mixed IO Speed
338 MB/s 506 MB/s Much faster mixed IO speed.
+50%
4K Mixed
Avg. 4K Random Mixed IO Speed
43.3 MB/s +3% 41.9 MB/s
SusWrite
Avg. Sustained Write Speed
359 MB/s Faster sustained write speed.
+18%
304 MB/s
Read
Peak Sequential Read Speed
516 MB/s 1329 MB/s Hugely faster peak read speed.
+158%
Write
Peak Sequential Write Speed
489 MB/s 1246 MB/s Hugely faster peak write speed.
+155%
4K Read
Peak 4K Random Read Speed
43.1 MB/s 47.9 MB/s Faster peak random read.
+11%
4K Write
Peak 4K Random Write Speed
119 MB/s 134 MB/s Faster peak random write.
+13%
Mixed
Peak Sequential Mixed IO Speed
385 MB/s 1133 MB/s Hugely faster peak mixed IO speed.
+194%
4K Mixed
Peak 4K Random Mixed IO Speed
55.4 MB/s 68.8 MB/s Faster peak random mixed IO.
+24%
SusWrite
Peak Sequential Sustained Write 60s Average
488 MB/s 662 MB/s Much faster peak sustained write speed.
+36%
Market Share
Based on 45,306,499 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.17 % Hugely higher market share.
+750%
0.02 %
User Rating
UBM User Rating
54 % Slightly more popular.
+8%
50 %
Age
Newest
84 Months 21+ Months Much more recent.
+75%
DQ Read
Peak 4K-64Thread Read Speed
389 MB/s 903 MB/s Hugely faster peak deep queue read.
+132%
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s 861 MB/s Hugely faster peak deep queue write.
+139%
AS-SSD Total
AS-SSD Total Score
1,274 Pts 2,765 Pts Hugely stronger server IO.
+117%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
357 MB/s 738 MB/s Hugely faster peak deep queue mixed IO.
+107%
ADQ Read
Avg. 4K-64Thread Read Speed
339 MB/s 543 MB/s Much faster deep queue read.
+60%
ADQ Write
Avg. 4K-64Thread Write Speed
284 MB/s 289 MB/s +2%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
293 MB/s 360 MB/s Faster deep queue mixed IO.
+23%
Capacity
Capacity
256GB 512GB
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MORE DETAILS

Solid State Drive Rankings (Price vs Performance) July 2021 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-11400F $239Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-10700K $304Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $85SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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