SamsungMZ-76P1T0B
Pm991

Controller: Samsung MJX. Memory: Samsung 64 layer MLC V-NAND. Release date ≈ Q1 2018.

  

Release date ≈ Q4 2019.

Real World Speed
Performance profile from 6,353 user samples
4,787 User Benchmarks
Best Bench: 130% 833GB free
Worst Bench: 82% 884GB free
Poor: 82% Great: 130%
SPEED RANK: 199th / 1058
1,566 User Benchmarks
Best Bench: 193% 343GB free (System drive)
Worst Bench: 64% 133GB free (System drive)
Poor: 64% Great: 193%
SPEED RANK: 176th / 1058
Effective Speed
Effective SSD Speed
111 % 119 % Slightly faster effective speed.
+7%
Read
Avg. Sequential Read Speed
481 MB/s 952 MB/s Hugely faster read speed.
+98%
Write
Avg. Sequential Write Speed
432 MB/s 466 MB/s Slightly faster write speed.
+8%
4K Read
Avg. 4K Random Read Speed
37.9 MB/s Faster random read.
+12%
33.9 MB/s
4K Write
Avg. 4K Random Write Speed
89.4 MB/s Slightly faster random write.
+9%
81.9 MB/s
Mixed
Avg. Sequential Mixed IO Speed
415 MB/s 472 MB/s Faster mixed IO speed.
+14%
4K Mixed
Avg. 4K Random Mixed IO Speed
50.2 MB/s Faster random mixed IO.
+24%
40.6 MB/s
SusWrite
Avg. Sustained Write Speed
415 MB/s Much faster sustained write speed.
+48%
281 MB/s
Read
Peak Sequential Read Speed
514 MB/s 1278 MB/s Hugely faster peak read speed.
+149%
Write
Peak Sequential Write Speed
487 MB/s 1247 MB/s Hugely faster peak write speed.
+156%
4K Read
Peak 4K Random Read Speed
44.9 MB/s 50 MB/s Faster peak random read.
+11%
4K Write
Peak 4K Random Write Speed
123 MB/s 142 MB/s Faster peak random write.
+15%
Mixed
Peak Sequential Mixed IO Speed
457 MB/s 1104 MB/s Hugely faster peak mixed IO speed.
+142%
4K Mixed
Peak 4K Random Mixed IO Speed
62.1 MB/s 70.2 MB/s Faster peak random mixed IO.
+13%
SusWrite
Peak Sequential Sustained Write 60s Average
485 MB/s 682 MB/s Much faster peak sustained write speed.
+41%
Market Share
Based on 47,135,143 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.01 % 0.02 % Hugely higher market share.
+100%
User Rating
UBM User Rating
51 % +2% 50 %
Age
Newest
43+ Months 23+ Months Much more recent.
+47%
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
359 MB/s 888 MB/s Hugely faster peak deep queue write.
+147%
AS-SSD Total
AS-SSD Total Score
1,277 Pts 2,799 Pts Hugely stronger server IO.
+119%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
363 MB/s 735 MB/s Hugely faster peak deep queue mixed IO.
+102%
ADQ Read
Avg. 4K-64Thread Read Speed
338 MB/s 547 MB/s Much faster deep queue read.
+62%
ADQ Write
Avg. 4K-64Thread Write Speed
287 MB/s 295 MB/s +3%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
301 MB/s 349 MB/s Faster deep queue mixed IO.
+16%
Capacity
Capacity
1TB 512GB
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MORE DETAILS

Solid State Drive Rankings (Price vs Performance) September 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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $72G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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