Average Bench: 160% (129th of 1058)

Based on 1,998 user benchmarks.  Model: SAMSUNG MZHPV128HDGM-00000

Outstanding average bench

The Samsung SM951 AHCI PCIe M.2 128GB averaged 60.4% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SM951 AHCI PCIe M.2 128GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 355MB/s
Avg. Sequential Read Speed 1,389MB/s

Very poor consistency

The range of scores (95th - 5th percentile) for the Samsung SM951 AHCI PCIe M.2 128GB is 73.3%. This is a particularly wide range which indicates that the Samsung SM951 AHCI PCIe M.2 128GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Write Speed 228MB/s
Avg. Sustained Write Speed 477MB/s

Average Bench

(Based on 1,998 samples)
Min Avg Max
717 Read 1,389 1,585
329 Write 581 672
370 Mixed 593 714
219 SusWrite 477 653
168% 760 MB/s
Min Avg Max
28 4K Read 45.8 46.7
56.6 4K Write 112 147
29 4K Mixed 45.8 54.5
187% 67.8 MB/s
Min Avg Max
327 DQ Read 635 701
127 DQ Write 228 265
194 DQ Mixed 355 406
282% 406 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
54GB free
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 627 648 638 539 357 369 MB/s
Read 1,561
Write 678
Mixed 688
SusWrite 530
191% 864 MB/s
4K Read 40.4
4K Write 47.9
4K Mixed 39
136% 42.4 MB/s
DQ Read 699
DQ Write 113
DQ Mixed 191
195% 334 MB/s
47GB free (System drive)
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 336 332 324 308 318 297 MB/s
Read 1,373
Write 579
Mixed 573
SusWrite 319
156% 711 MB/s
4K Read 36.2
4K Write 121
4K Mixed 45.3
177% 67.5 MB/s
DQ Read 699
DQ Write 219
DQ Mixed 346
285% 421 MB/s
51GB free (System drive)
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 490 413 421 404 240 410 MB/s
Read 1,291
Write 620
Mixed 599
SusWrite 396
160% 727 MB/s
4K Read 31
4K Write 126
4K Mixed 39
163% 65.2 MB/s
DQ Read 701
DQ Write 206
DQ Mixed 402
310% 436 MB/s
1,998 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,231,203 SSDs tested.


AmazonUS $1103 years
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Typical SM951 AHCI PCIe M.2 128GB Builds (Compare 21,548 builds) See popular component choices, score breakdowns and rankings.
Gaming 71%
Desktop 90%
Aircraft carrier
Workstation 60%

Motherboard: Asus Z170 PRO GAMING - $295

EDIT WITH CUSTOM PC BUILDER Value: 58% - Above average Total price: $1,201

Popular SM951 AHCI PCIe M.2 128GB compatible motherboards:

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) September 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]


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.


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.
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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