Average Bench: 138% (139th of 1026)

Based on 5,025 user benchmarks.  Models: NVMe PM951 NVMe SAMSU, PM951 NVMe SAMSUNG 512GB

Outstanding average bench

The Samsung PM951 NVMe PCIe M.2 512GB averaged 37.8% 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 505MB/s
Avg. 4K-64Thread Read Speed 810MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung PM951 NVMe PCIe M.2 512GB is 80.7%. 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 386MB/s
Avg. Sustained Write Speed 412MB/s
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Average Bench

(Based on 5,025 samples)
Min Avg Max
664 Read 951 1,099
187 Write 479 583
261 Mixed 386 463
118 SusWrite 412 571
123% 557 MB/s
Min Avg Max
19.9 4K Read 35.7 41.5
39 4K Write 109 155
13.9 4K Mixed 34.5 45.8
156% 59.8 MB/s
Min Avg Max
277 DQ Read 810 1,045
139 DQ Write 456 593
147 DQ Mixed 505 609
410% 590 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
370GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 573 570 570 570 569 569 MB/s
Read 1,104
Write 581
Mixed 473
SusWrite 570
151% 682 MB/s
4K Read 41.1
4K Write 155
4K Mixed 46.1
203% 80.7 MB/s
DQ Read 1,011
DQ Write 590
DQ Mixed 595
498% 732 MB/s
477GB free
Firmware: BXV7 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 569 565 569 575 573 570 MB/s
Read 943
Write 553
Mixed 450
SusWrite 570
140% 629 MB/s
4K Read 40.3
4K Write 84.5
4K Mixed 40.7
158% 55.2 MB/s
DQ Read 1,048
DQ Write 457
DQ Mixed 584
477% 696 MB/s
125GB free (System drive)
Firmware: BXV76D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 530 539 517 442 303 283 MB/s
Read 892
Write 496
Mixed 411
SusWrite 436
124% 559 MB/s
4K Read 37.9
4K Write 114
4K Mixed 40.7
170% 64.1 MB/s
DQ Read 948
DQ Write 554
DQ Mixed 564
470% 689 MB/s
125GB free (System drive)
Firmware: BXV76D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 332 280 310 283 299 306 MB/s
Read 864
Write 488
Mixed 380
SusWrite 302
112% 508 MB/s
4K Read 34.7
4K Write 88.2
4K Mixed 37.4
147% 53.4 MB/s
DQ Read 891
DQ Write 448
DQ Mixed 546
438% 628 MB/s
418GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 528 519 552 560 560 552 MB/s
Read 756
Write 568
Mixed 387
SusWrite 545
126% 564 MB/s
4K Read 15.7
4K Write 75.1
4K Mixed 17.6
86% 36.1 MB/s
DQ Read 883
DQ Write 573
DQ Mixed 600
482% 685 MB/s
28GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 136 119 120 120 112 122 MB/s
Read 810
Write 160
Mixed 270
SusWrite 122
74% 340 MB/s
4K Read 26.6
4K Write 134
4K Mixed 11.6
126% 57.4 MB/s
DQ Read 862
DQ Write 211
DQ Mixed 397
328% 490 MB/s
5,025 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 28,476,015 SSDs tested.

Typical PM951 NVMe PCIe M.2 512GB Builds (Compare 7,825 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 15%
Tree trunk
Desktop
Desktop 70%
Battleship
Workstation
Workstation 50%
Yacht

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.

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How it works

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Solid State Drive Rankings (Price vs Performance) July 2020 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

1026 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 i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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