Average Bench: 131% (162nd of 1058)

Based on 161 user benchmarks.  Model: NVMe PM991 NVMe Samsung 512GB

Outstanding average bench

The Nvme PM991 Samsung 512GB averaged 31.0% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme PM991 Samsung 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 461MB/s
Avg. 4K-64Thread Read Speed 628MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme PM991 Samsung 512GB is 102%. This is a particularly wide range which indicates that the Nvme PM991 Samsung 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 383MB/s
Avg. 4K-64Thread Write Speed 271MB/s
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Average Bench

(Based on 161 samples)
Min Avg Max
639 Read 1,011 1,252
120 Write 683 1,041
192 Mixed 674 993
128 SusWrite 383 583
153% 688 MB/s
Min Avg Max
19.6 4K Read 35 48.3
41 4K Write 81.4 127
26.2 4K Mixed 44 64.3
152% 53.4 MB/s
Min Avg Max
271 DQ Read 628 904
94 DQ Write 271 451
154 DQ Mixed 461 747
338% 453 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
401GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 763 686 565 422 284 285 MB/s
Read 1220
Write 1,055
Mixed 966
SusWrite 501
209% 935 MB/s
4K Read 34.3
4K Write 59.3
4K Mixed 41
136% 44.9 MB/s
DQ Read 755
DQ Write 227
DQ Mixed 494
363% 492 MB/s
225GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 153 142 149 146 149 149 MB/s
Read 936
Write 197
Mixed 197
SusWrite 148
80% 370 MB/s
4K Read 30.2
4K Write 88.8
4K Mixed 37.6
141% 52.2 MB/s
DQ Read 468
DQ Write 130
DQ Mixed 266
204% 288 MB/s
179GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 149 123 136 143 129 115 MB/s
Read 871
Write 121
Mixed 245
SusWrite 132
74% 342 MB/s
4K Read 32.9
4K Write 73.8
4K Mixed 39.1
139% 48.6 MB/s
DQ Read 467
DQ Write 114
DQ Mixed 197
169% 260 MB/s
129GB free (System drive)
Firmware: 25307039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 145 129 131 124 124 124 MB/s
Read 639
Write 137
Mixed 229
SusWrite 129
62% 284 MB/s
4K Read 21.9
4K Write 71.5
4K Mixed 29
108% 40.8 MB/s
DQ Read 464
DQ Write 148
DQ Mixed 192
171% 268 MB/s
269GB free (System drive)
Firmware: 25309039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 166 154 164 131 162 174 MB/s
Read 736
Write 316
Mixed 284
SusWrite 158
82% 374 MB/s
4K Read 21.2
4K Write 49.5
4K Mixed 27.5
94% 32.7 MB/s
DQ Read 271
DQ Write 128
DQ Mixed 208
152% 203 MB/s
273GB free (System drive)
Firmware: 25309039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 186 145 137 154 156 155 MB/s
Read 665
Write 183
Mixed 215
SusWrite 156
66% 305 MB/s
4K Read 24.9
4K Write 46.6
4K Mixed 28.8
99% 33.4 MB/s
DQ Read 284
DQ Write 125
DQ Mixed 189
144% 199 MB/s
51GB free (System drive)
Firmware: 25309039 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 103 70 55 57 51 47 MB/s
Read 769
Write 120
Mixed 162
SusWrite 63.7
60% 279 MB/s
4K Read 26
4K Write 59.2
4K Mixed 29.2
108% 38.1 MB/s
DQ Read 242
DQ Write 64.5
DQ Mixed 127
100% 145 MB/s
161 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,204,199 SSDs tested.

Typical PM991 Samsung 512GB Builds (Compare 793 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 18%
Surfboard
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 16%
Surfboard

System: Dell Inspiron 5406 2n1

EDIT WITH CUSTOM PC BUILDER

Popular PM991 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) 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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