Average Bench: 162% (127th of 1058)

Based on 1,225 user benchmarks.  Model: PM991a NVMe Samsung 512GB

Outstanding average bench

The Pm991a NVMe Samsung 512GB averaged 61.6% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Pm991a NVMe Samsung 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 683MB/s
Avg. 4K-64Thread Read Speed 870MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Pm991a NVMe Samsung 512GB is 135%. This is a particularly wide range which indicates that the Pm991a NVMe Samsung 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 530MB/s
Avg. 4K Random Write Speed 96.6MB/s
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Average Bench

(Based on 1,225 samples)
Min Avg Max
619 Read 1,162 1,577
139 Write 946 1,528
208 Mixed 871 1,439
113 SusWrite 530 796
196% 877 MB/s
Min Avg Max
23 4K Read 37.4 54.9
54.8 4K Write 96.6 159
30.3 4K Mixed 50.3 78.5
172% 61.4 MB/s
Min Avg Max
479 DQ Read 870 1,371
115 DQ Write 457 1,116
171 DQ Mixed 683 1,144
502% 670 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
344GB free (System drive)
Firmware: 26302039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1061 808 824 762 281 148 MB/s
Read 1,049
Write 925
Mixed 858
SusWrite 647
195% 870 MB/s
4K Read 51.5
4K Write 159
4K Mixed 75.5
259% 95.3 MB/s
DQ Read 1,388
DQ Write 854
DQ Mixed 859
710% 1,034 MB/s
381GB free (System drive)
Firmware: 26302039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1321 1341 658 386 376 367 MB/s
Read 1,373
Write 1,508
Mixed 1,117
SusWrite 742
266% 1,185 MB/s
4K Read 38
4K Write 97.5
4K Mixed 53.3
178% 62.9 MB/s
DQ Read 822
DQ Write 614
DQ Mixed 713
534% 716 MB/s
354GB free (System drive)
Firmware: 26302039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1304 1079 873 449 135 191 MB/s
Read 1,399
Write 1369
Mixed 1,220
SusWrite 672
262% 1,165 MB/s
4K Read 38.1
4K Write 91.2
4K Mixed 51.4
172% 60.2 MB/s
DQ Read 840
DQ Write 451
DQ Mixed 950
625% 747 MB/s
285GB free (System drive)
Firmware: 26300039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1122 1237 965 217 355 222 MB/s
Read 840
Write 1,235
Mixed 880
SusWrite 686
206% 910 MB/s
4K Read 37.4
4K Write 87.5
4K Mixed 51.6
169% 58.8 MB/s
DQ Read 846
DQ Write 300
DQ Mixed 826
544% 657 MB/s
436GB free (System drive)
Firmware: 26302039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 234 246 285 207 286 375 MB/s
Read 1,150
Write 577
Mixed 726
SusWrite 272
151% 681 MB/s
4K Read 41.2
4K Write 89.5
4K Mixed 54.9
180% 61.9 MB/s
DQ Read 451
DQ Write 184
DQ Mixed 231
194% 289 MB/s
329GB free (System drive)
Firmware: 26300039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 149 144 162 143 137 145 MB/s
Read 1,215
Write 309
Mixed 361
SusWrite 146
110% 508 MB/s
4K Read 36
4K Write 102
4K Mixed 43.4
164% 60.6 MB/s
DQ Read 852
DQ Write 177
DQ Mixed 319
284% 449 MB/s
1,225 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,204,670 SSDs tested.

Typical NVMe Samsung 512GB Builds (Compare 5,769 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 121%
UFO
Desktop
Desktop 95%
Nuclear submarine
Workstation
Workstation 119%
UFO

System: Dell XPS 8940

EDIT WITH CUSTOM PC BUILDER Value: 82% - Excellent Total price: $760

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.
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  • - 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) 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.

 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 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) $40Corsair 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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