Average Bench: 137% (159th of 1058)

Based on 6,689 user benchmarks.  Models: NVMe PM951 NVMe SAMSU, PM951 NVMe SAMSUNG 512GB

Outstanding average bench

The Samsung PM951 NVMe PCIe M.2 512GB averaged 36.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung PM951 NVMe PCIe M.2 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 497MB/s
Avg. 4K-64Thread Read Speed 797MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung PM951 NVMe PCIe M.2 512GB is 89.9%. This is a particularly wide range which indicates that the Samsung PM951 NVMe PCIe M.2 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 380MB/s
Avg. Sustained Write Speed 408MB/s
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Average Bench

(Based on 6,689 samples)
Min Avg Max
603 Read 955 1,104
178 Write 477 583
250 Mixed 380 468
96.6 SusWrite 408 572
123% 555 MB/s
Min Avg Max
16.5 4K Read 37.3 41.7
31.6 4K Write 105 152
12.3 4K Mixed 33.5 45.7
155% 58.6 MB/s
Min Avg Max
258 DQ Read 797 1,044
126 DQ Write 453 594
152 DQ Mixed 497 609
404% 583 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
342GB free
Firmware: 7D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 580 585 583 585 584 584 MB/s
Read 981
Write 583
Mixed 501
SusWrite 584
147% 662 MB/s
4K Read 41
4K Write 164
4K Mixed 49.9
213% 85 MB/s
DQ Read 1,045
DQ Write 597
DQ Mixed 610
510% 751 MB/s
340GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 550 525 549 558 494 490 MB/s
Read 951
Write 560
Mixed 423
SusWrite 528
137% 615 MB/s
4K Read 38.1
4K Write 143
4K Mixed 37.7
182% 72.9 MB/s
DQ Read 1,013
DQ Write 581
DQ Mixed 586
493% 727 MB/s
367GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 574 563 560 564 566 559 MB/s
Read 963
Write 581
Mixed 423
SusWrite 564
141% 633 MB/s
4K Read 30.2
4K Write 128
4K Mixed 36.9
161% 65 MB/s
DQ Read 943
DQ Write 575
DQ Mixed 604
492% 707 MB/s
432GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 545 555 512 526 510 524 MB/s
Read 780
Write 574
Mixed 374
SusWrite 529
126% 564 MB/s
4K Read 29.4
4K Write 96.8
4K Mixed 37.5
144% 54.6 MB/s
DQ Read 822
DQ Write 561
DQ Mixed 583
465% 656 MB/s
69GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 177 155 161 148 150 154 MB/s
Read 1,047
Write 197
Mixed 302
SusWrite 158
92% 426 MB/s
4K Read 35.7
4K Write 109
4K Mixed 12.2
128% 52.4 MB/s
DQ Read 910
DQ Write 124
DQ Mixed 457
350% 497 MB/s
6,689 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,259,291 SSDs tested.

Typical PM951 NVMe PCIe M.2 512GB Builds (Compare 2,788 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 11%
Tree trunk
Desktop
Desktop 64%
Destroyer
Workstation
Workstation 10%
Tree trunk

System: Dell XPS 15 9550

EDIT WITH CUSTOM PC BUILDER

Popular PM951 NVMe PCIe M.2 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.

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.
Solid State Drive Rankings (Price vs Performance) July 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 i5-11400F $239Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $85SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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