SamsungMZ-7KE512BW
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 42,453 user samples
41,003 User Benchmarks
Best Bench: 123% 461GB free
Worst Bench: 73% 122GB free (System drive)
Poor: 73% Great: 123%
SPEED RANK: 231st / 1058
1,450 User Benchmarks
Best Bench: 191% 391GB free
Worst Bench: 77% 133GB free (System drive)
Poor: 77% Great: 191%
SPEED RANK: 174th / 1058
Effective Speed
Effective SSD Speed
103 % 124 % Faster effective speed.
+20%
Read
Avg. Sequential Read Speed
477 MB/s 965 MB/s Hugely faster read speed.
+102%
Write
Avg. Sequential Write Speed
409 MB/s 548 MB/s Much faster write speed.
+34%
4K Read
Avg. 4K Random Read Speed
33.9 MB/s +1% 33.6 MB/s
4K Write
Avg. 4K Random Write Speed
87.5 MB/s +2% 85.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed
350 MB/s 536 MB/s Much faster mixed IO speed.
+53%
4K Mixed
Avg. 4K Random Mixed IO Speed
44.6 MB/s +3% 43.1 MB/s
SusWrite
Avg. Sustained Write Speed
369 MB/s Faster sustained write speed.
+17%
316 MB/s
Read
Peak Sequential Read Speed
515 MB/s 1346 MB/s Hugely faster peak read speed.
+161%
Write
Peak Sequential Write Speed
488 MB/s 1278 MB/s Hugely faster peak write speed.
+162%
4K Read
Peak 4K Random Read Speed
42.2 MB/s 48 MB/s Faster peak random read.
+14%
4K Write
Peak 4K Random Write Speed
119 MB/s 135 MB/s Faster peak random write.
+13%
Mixed
Peak Sequential Mixed IO Speed
398 MB/s 1166 MB/s Hugely faster peak mixed IO speed.
+193%
4K Mixed
Peak 4K Random Mixed IO Speed
55.3 MB/s 69.2 MB/s Faster peak random mixed IO.
+25%
SusWrite
Peak Sequential Sustained Write 60s Average
487 MB/s 656 MB/s Much faster peak sustained write speed.
+35%
Market Share
Based on 44,311,017 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.1 % Hugely higher market share.
+400%
0.02 %
User Rating
UBM User Rating
56 % More popular.
+12%
50 %
Age
Newest
83 Months 20+ Months Much more recent.
+76%
DQ Read
Peak 4K-64Thread Read Speed
387 MB/s 903 MB/s Hugely faster peak deep queue read.
+133%
DQ Write
Peak 4K-64Thread Write Speed
358 MB/s 868 MB/s Hugely faster peak deep queue write.
+142%
AS-SSD Total
AS-SSD Total Score
1,267 Pts 2,780 Pts Hugely stronger server IO.
+119%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
363 MB/s 740 MB/s Hugely faster peak deep queue mixed IO.
+104%
ADQ Read
Avg. 4K-64Thread Read Speed
340 MB/s 565 MB/s Much faster deep queue read.
+66%
ADQ Write
Avg. 4K-64Thread Write Speed
282 MB/s 312 MB/s Faster deep queue write.
+11%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
296 MB/s 379 MB/s Faster deep queue mixed IO.
+28%
Capacity
Capacity
512GB 512GB
Solid State Drive Rankings (Price vs Performance) June 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.
  • - 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 i5-11400F $220Nvidia RTX 3070 $500Crucial MX500 250GB $49
Intel Core i5-11600K $259Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-11700K $380Nvidia RTX 3080 $700Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $94SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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