SamsungMZ-75E250B
Pm991

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

  

Release date ≈ Q4 2019.

Real World Speed
Performance profile from 799,688 user samples
798,238 User Benchmarks
Best Bench: 124% 65GB free
Worst Bench: 75% 98GB free (System drive)
Poor: 75% Great: 124%
SPEED RANK: 232nd / 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.
+21%
Read
Avg. Sequential Read Speed
471 MB/s 965 MB/s Hugely faster read speed.
+105%
Write
Avg. Sequential Write Speed
432 MB/s 548 MB/s Faster write speed.
+27%
4K Read
Avg. 4K Random Read Speed
39.5 MB/s Faster random read.
+18%
33.6 MB/s
4K Write
Avg. 4K Random Write Speed
93.3 MB/s Slightly faster random write.
+9%
85.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed
371 MB/s 536 MB/s Much faster mixed IO speed.
+44%
4K Mixed
Avg. 4K Random Mixed IO Speed
52 MB/s Faster random mixed IO.
+21%
43.1 MB/s
SusWrite
Avg. Sustained Write Speed
247 MB/s 316 MB/s Faster sustained write speed.
+28%
Read
Peak Sequential Read Speed
507 MB/s 1346 MB/s Hugely faster peak read speed.
+165%
Write
Peak Sequential Write Speed
491 MB/s 1278 MB/s Hugely faster peak write speed.
+160%
4K Read
Peak 4K Random Read Speed
47.5 MB/s 48 MB/s +1%
4K Write
Peak 4K Random Write Speed
125 MB/s 135 MB/s Slightly faster peak random write.
+8%
Mixed
Peak Sequential Mixed IO Speed
416 MB/s 1166 MB/s Hugely faster peak mixed IO speed.
+180%
4K Mixed
Peak 4K Random Mixed IO Speed
63.8 MB/s 69.2 MB/s Slightly faster peak random mixed IO.
+8%
SusWrite
Peak Sequential Sustained Write 60s Average
328 MB/s 656 MB/s Hugely faster peak sustained write speed.
+100%
Market Share
Based on 44,267,500 SSDs tested.
Market Share
Market Share (trailing 30 days)
1.15 % Insanely higher market share.
+11,400%
0.01 %
User Rating
UBM User Rating
55 % Slightly more popular.
+10%
50 %
Age
Newest
78 Months 20+ Months Much more recent.
+74%
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s 903 MB/s Hugely faster peak deep queue read.
+134%
DQ Write
Peak 4K-64Thread Write Speed
362 MB/s 868 MB/s Hugely faster peak deep queue write.
+140%
AS-SSD Total
AS-SSD Total Score
1,285 Pts 2,780 Pts Hugely stronger server IO.
+116%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
370 MB/s 740 MB/s Hugely faster peak deep queue mixed IO.
+100%
ADQ Read
Avg. 4K-64Thread Read Speed
349 MB/s 565 MB/s Much faster deep queue read.
+62%
ADQ Write
Avg. 4K-64Thread Write Speed
299 MB/s 312 MB/s +4%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
311 MB/s 379 MB/s Faster deep queue mixed IO.
+22%
Capacity
Capacity
250GB 512GB
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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

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 3060-Ti $400Crucial MX500 250GB $48
Intel Core i5-11600K $259Nvidia RTX 3070 $500Samsung 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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