Average Bench: 179% (102nd of 1037)

Based on 5,662 user benchmarks.  Models: SAMSUNG MZHPV256HDGL-00000, SAMSUNG MZHPV256HDGL-000L1

Outstanding average bench

The Samsung SM951 AHCI PCIe M.2 256GB averaged 78.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SM951 AHCI PCIe M.2 256GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 452MB/s
Avg. Sequential Read Speed 1,333MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SM951 AHCI PCIe M.2 256GB is 100%. This is a particularly wide range which indicates that the Samsung SM951 AHCI PCIe M.2 256GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Write Speed 333MB/s
Avg. Sequential Mixed IO Speed 708MB/s

Average Bench

(Based on 5,662 samples)
Min Avg Max
729 Read 1,333 1,568
516 Write 1,009 1,211
478 Mixed 708 863
282 SusWrite 810 1,184
216% 965 MB/s
Min Avg Max
26 4K Read 39.4 46.2
45.8 4K Write 112 174
30.3 4K Mixed 48.1 58.6
180% 66.3 MB/s
Min Avg Max
316 DQ Read 601 701
146 DQ Write 333 393
168 DQ Mixed 452 532
340% 462 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
131GB free (System drive)
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 982 888 783 810 769 765 MB/s
Read 1,401
Write 1,107
Mixed 813
SusWrite 833
232% 1,038 MB/s
4K Read 37.5
4K Write 128
4K Mixed 58.2
199% 74.5 MB/s
DQ Read 699
DQ Write 365
DQ Mixed 533
396% 533 MB/s
5,662 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,609,663 SSDs tested.


AmazonUS $2237 mins
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Typical SM951 AHCI PCIe M.2 256GB Builds (Compare 448 builds) See popular component choices, score breakdowns and rankings.
Gaming 32%
Sail boat
Desktop 77%
Workstation 27%

System: Asus G751JY

EDIT WITH CUSTOM PC BUILDER Value: 13% - Very poor Total price: $223

Popular SM951 AHCI PCIe M.2 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.

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.
  • - 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) September 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.


1037 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 $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9400F $140Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $299Nvidia RTX 2070S (Super) $505Samsung 860 Evo 250GB $43
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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