Average Bench: 151% (111th of 1011)

Based on 1,393 user benchmarks.  Models: NVMe PM951 NVMe SAMSU, PM951 NVMe SAMSUNG 1024GB

Outstanding average bench

The Samsung PM951 NVMe PCIe M.2 512GB 1TB averaged 51.4% 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 1TB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 579MB/s
Avg. 4K-64Thread Read Speed 765MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung PM951 NVMe PCIe M.2 512GB 1TB is 102%. This is a particularly wide range which indicates that the Samsung PM951 NVMe PCIe M.2 512GB 1TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 464MB/s
Avg. 4K Random Mixed IO Speed 37MB/s
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Average Bench

(Based on 1,393 samples)
Min Avg Max
667 Read 947 1,104
286 Write 650 833
353 Mixed 464 542
151 SusWrite 624 918
150% 671 MB/s
Min Avg Max
15.3 4K Read 32.1 40.7
36.5 4K Write 106 155
17.2 4K Mixed 37 51.3
152% 58.3 MB/s
Min Avg Max
147 DQ Read 765 1,044
166 DQ Write 566 824
113 DQ Mixed 579 746
456% 637 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
630GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 708 807 785 320 436 376 MB/s
Read 1,117
Write 666
Mixed 493
SusWrite 572
158% 712 MB/s
4K Read 39.7
4K Write 143
4K Mixed 48.3
198% 77 MB/s
DQ Read 1,015
DQ Write 549
DQ Mixed 686
536% 750 MB/s
467GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 653 668 667 663 672 685 MB/s
Read 960
Write 644
Mixed 500
SusWrite 668
155% 693 MB/s
4K Read 33
4K Write 105
4K Mixed 46.1
164% 61.3 MB/s
DQ Read 884
DQ Write 603
DQ Mixed 696
532% 728 MB/s
77GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 523 531 520 501 469 431 MB/s
Read 1,030
Write 607
Mixed 500
SusWrite 496
146% 658 MB/s
4K Read 38.7
4K Write 136
4K Mixed 49.2
193% 74.5 MB/s
DQ Read 734
DQ Write 571
DQ Mixed 664
494% 656 MB/s
596GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 622 606 642 661 662 692 MB/s
Read 1,015
Write 548
Mixed 473
SusWrite 647
149% 671 MB/s
4K Read 33.8
4K Write 87.8
4K Mixed 40.4
150% 54 MB/s
DQ Read 657
DQ Write 488
DQ Mixed 525
405% 557 MB/s
629GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 519 518 536 553 556 541 MB/s
Read 909
Write 579
Mixed 453
SusWrite 537
138% 620 MB/s
4K Read 30
4K Write 102
4K Mixed 38.2
148% 56.8 MB/s
DQ Read 1007
DQ Write 508
DQ Mixed 680
525% 732 MB/s
877GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 798 854 864 853 822 823 MB/s
Read 723
Write 768
Mixed 435
SusWrite 836
156% 690 MB/s
4K Read 18.4
4K Write 67.6
4K Mixed 23.7
94% 36.6 MB/s
DQ Read 884
DQ Write 698
DQ Mixed 598
500% 727 MB/s
353GB free (System drive)
Firmware: BXV77D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 358 336 338 315 316 290 MB/s
Read 1,030
Write 368
Mixed 447
SusWrite 326
119% 542 MB/s
4K Read 34.7
4K Write 102
4K Mixed 21.6
134% 52.7 MB/s
DQ Read 849
DQ Write 471
DQ Mixed 630
476% 650 MB/s
1,393 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 18,319,524 SSDs tested.

Typical PM951 NVMe PCIe M.2 512GB 1TB Builds (Compare 6,183 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 15%
Tree trunk
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 41%
Speed boat

System: Dell XPS 15 9550

EDIT WITH CUSTOM PC BUILDER

Popular PM951 NVMe PCIe M.2 512GB 1TB 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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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) October 2019 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

1011 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 i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $55
Intel Core i5-9600K $225Nvidia GTX 1660-Ti $275Samsung 850 Evo 500GB $107
Intel Core i7-9700K $288Nvidia RTX 2060S (Super) $430Samsung 850 Pro 256GB $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $76SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $37G.SKILL Trident Z DDR4 3200 C14 4x16GB $603SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3200 C16 2x8GB $83SanDisk Ultra Fit 32GB $14
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