Average Bench: 188% (87th of 1026)

Based on 282 user benchmarks.  Model: NVMe SM951 NVMe SAMSU

Outstanding average bench

The Nvme SM951 SAMSU 256GB averaged 88.0% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme SM951 SAMSU 256GB near the top of the comparison list.


Avg. Sequential Read Speed 1,682MB/s
Avg. 4K-64Thread Mixed IO Speed 191MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme SM951 SAMSU 256GB is 113%. This is a particularly wide range which indicates that the Nvme SM951 SAMSU 256GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Write Speed 242MB/s
Avg. Sustained Write Speed 664MB/s

Average Bench

(Based on 282 samples)
Min Avg Max
1,047 Read 1,682 1,997
505 Write 935 1,226
530 Mixed 1,011 1,399
326 SusWrite 664 1,115
238% 1,073 MB/s
Min Avg Max
22.8 4K Read 40.3 51.4
40.8 4K Write 119 201
20.7 4K Mixed 41 59.6
177% 66.9 MB/s
Min Avg Max
33.5 DQ Read 424 1,088
79.8 DQ Write 242 379
21.3 DQ Mixed 191 546
180% 286 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
74GB free (System drive)
Firmware: BXW75D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 915 1010 842 439 424 416 MB/s
Read 1,212
Write 1,182
Mixed 566
SusWrite 674
203% 909 MB/s
4K Read 24.1
4K Write 35.8
4K Mixed 31.5
96% 30.5 MB/s
DQ Read 223
DQ Write 186
DQ Mixed 210
156% 206 MB/s
75GB free (System drive)
Firmware: BXW75D0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 595 507 518 421 506 470 MB/s
Read 1095
Write 785
Mixed 535
SusWrite 503
162% 729 MB/s
4K Read 23.1
4K Write 34.1
4K Mixed 25.7
86% 27.6 MB/s
DQ Read 160
DQ Write 132
DQ Mixed 146
110% 146 MB/s
282 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 28,622,675 SSDs tested.

Typical SM951 SAMSU 256GB Builds (Compare 3,190 builds) See popular component choices, score breakdowns and rankings.
Gaming 15%
Tree trunk
Desktop 80%
Workstation 55%

System: Dell Precision 7510


Popular SM951 SAMSU 256GB 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.
  • - 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.
  • - Share your opinion by voting.
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]


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.


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.
Intel Core i5-9600K $190Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $47
Intel Core i5-9400F $150Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $339Nvidia RTX 2070S (Super) $510Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair 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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