Average Bench: 121% (174th of 1058)

Based on 1,285 user benchmarks.  Model: PM991 NVMe Samsung 512GB

Outstanding average bench

The Pm991 NVMe Samsung 512GB averaged 21.3% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Pm991 NVMe Samsung 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 366MB/s
Avg. 4K-64Thread Read Speed 565MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Pm991 NVMe Samsung 512GB is 119%. This is a particularly wide range which indicates that the Pm991 NVMe Samsung 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 292MB/s
Avg. Sequential Write Speed 490MB/s
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Average Bench

(Based on 1,285 samples)
Min Avg Max
526 Read 944 1,375
80.5 Write 490 1,286
149 Mixed 490 1,172
70 SusWrite 292 678
123% 554 MB/s
Min Avg Max
17.6 4K Read 33.9 50.2
42 4K Write 84.8 143
20.7 4K Mixed 42.5 70.5
151% 53.7 MB/s
Min Avg Max
306 DQ Read 565 904
76.8 DQ Write 305 834
123 DQ Mixed 366 734
291% 412 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
383GB free (System drive)
Firmware: 25306039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1140 1214 526 324 322 325 MB/s
Read 976
Write 1,144
Mixed 976
SusWrite 642
211% 934 MB/s
4K Read 35.8
4K Write 86.2
4K Mixed 50
164% 57.3 MB/s
DQ Read 834
DQ Write 557
DQ Mixed 640
492% 677 MB/s
352GB free (System drive)
Firmware: 25306039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 149 185 163 166 157 173 MB/s
Read 912
Write 117
Mixed 333
SusWrite 166
83% 382 MB/s
4K Read 30.8
4K Write 69.7
4K Mixed 38.6
133% 46.4 MB/s
DQ Read 464
DQ Write 193
DQ Mixed 200
182% 285 MB/s
148GB free (System drive)
Firmware: 25309039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 104 100 94 89 83 76 MB/s
Read 822
Write 93.7
Mixed 166
SusWrite 91
63% 293 MB/s
4K Read 29.6
4K Write 63.4
4K Mixed 33.8
122% 42.3 MB/s
DQ Read 465
DQ Write 83.4
DQ Mixed 130
132% 226 MB/s
74GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 97 86 87 82 87 85 MB/s
Read 506
Write 159
Mixed 190
SusWrite 87.3
52% 236 MB/s
4K Read 29.7
4K Write 69.6
4K Mixed 35.4
127% 44.9 MB/s
DQ Read 463
DQ Write 113
DQ Mixed 244
191% 273 MB/s
236GB free (System drive)
Firmware: 25309039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 179 138 120 144 149 153 MB/s
Read 794
Write 240
Mixed 166
SusWrite 147
73% 337 MB/s
4K Read 24.2
4K Write 7.3
4K Mixed 25.9
74% 19.1 MB/s
1,285 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,497,146 SSDs tested.

Typical NVMe Samsung 512GB Builds (Compare 5,753 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 10%
Tree trunk
Desktop
Desktop 71%
Battleship
Workstation
Workstation 10%
Tree trunk

System: Dell G3 3590

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Popular NVMe Samsung 512GB systems:

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.

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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.
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  • - 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.
Solid State Drive Rankings (Price vs Performance) December 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.

 Comments

1058 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-12600K $300Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $220Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $315Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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