Average Bench: 120% (177th of 1058)

Based on 1,724 user benchmarks.  Model: PM991 NVMe Samsung 512GB

Outstanding average bench

The Pm991 NVMe Samsung 512GB averaged 19.9% 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 356MB/s
Avg. 4K-64Thread Read Speed 540MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Pm991 NVMe Samsung 512GB is 121%. 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 298MB/s
Avg. Sequential Mixed IO Speed 499MB/s
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Average Bench

(Based on 1,724 samples)
Min Avg Max
576 Read 946 1,329
104 Write 503 1,244
150 Mixed 499 1,135
84 SusWrite 298 660
124% 562 MB/s
Min Avg Max
16.1 4K Read 32.9 48
34.9 4K Write 83.4 135
19.1 4K Mixed 41.5 69.1
147% 52.6 MB/s
Min Avg Max
226 DQ Read 540 903
75.4 DQ Write 288 863
112 DQ Mixed 356 738
280% 395 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
343GB free (System drive)
Firmware: 25309039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 30 20 24 15 15 22 MB/s
Read 3,774
Write 30.3
Mixed 64.9
SusWrite 20.8
202% 973 MB/s
4K Read 400
4K Write 2.2
4K Mixed 3.8
612% 135 MB/s
339GB free
Firmware: 25304039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1214 1247 1249 728 341 340 MB/s
Read 1,410
Write 1,274
Mixed 1,232
SusWrite 853
268% 1,193 MB/s
4K Read 49.3
4K Write 138
4K Mixed 69.8
237% 85.8 MB/s
DQ Read 895
DQ Write 886
DQ Mixed 715
586% 832 MB/s
312GB free (System drive)
Firmware: 25304039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 292 270 263 255 248 270 MB/s
Read 1,232
Write 468
Mixed 524
SusWrite 266
137% 623 MB/s
4K Read 38.2
4K Write 85.9
4K Mixed 46.5
163% 56.9 MB/s
DQ Read 484
DQ Write 264
DQ Mixed 356
269% 368 MB/s
361GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 207 182 170 190 177 166 MB/s
Read 902
Write 427
Mixed 469
SusWrite 182
109% 495 MB/s
4K Read 32.9
4K Write 73.9
4K Mixed 40.7
141% 49.2 MB/s
DQ Read 464
DQ Write 229
DQ Mixed 306
238% 333 MB/s
284GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 177 171 152 162 158 155 MB/s
Read 1,018
Write 202
Mixed 269
SusWrite 162
89% 413 MB/s
4K Read 29.7
4K Write 96.3
4K Mixed 32.9
138% 53 MB/s
DQ Read 467
DQ Write 107
DQ Mixed 257
196% 277 MB/s
346GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 158 185 188 167 179 165 MB/s
Read 480
Write 207
Mixed 137
SusWrite 174
55% 250 MB/s
4K Read 26.2
4K Write 62.5
4K Mixed 36.2
119% 41.6 MB/s
DQ Read 441
DQ Write 185
DQ Mixed 196
176% 274 MB/s
384GB free (System drive)
Firmware: 25306039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 358 319 325 314 343 285 MB/s
Read 612
Write 574
Mixed 506
SusWrite 324
113% 504 MB/s
4K Read 18.7
4K Write 31
4K Mixed 21.3
72% 23.7 MB/s
DQ Read 214
DQ Write 92.8
DQ Mixed 180
126% 162 MB/s
1,724 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,553,673 SSDs tested.

Typical NVMe Samsung 512GB Builds (Compare 689 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 8%
Tree trunk
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 8%
Tree trunk

System: Dell Latitude 5510

EDIT WITH CUSTOM PC BUILDER

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.
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Solid State Drive Rankings (Price vs Performance) August 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 i5-11600K $270Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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