Average Bench: 181% (112th of 1058)

Based on 7,038 user benchmarks.  Model: NVMe SAMSUNG MZVPV256

Outstanding average bench

The Samsung SM951 NVMe PCIe M.2 256GB averaged 80.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SM951 NVMe PCIe M.2 256GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 429MB/s
Avg. 4K-64Thread Read Speed 847MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SM951 NVMe PCIe M.2 256GB is 119%. This is a particularly wide range which indicates that the Samsung SM951 NVMe PCIe M.2 256GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Write Speed 284MB/s
Avg. Sustained Write Speed 592MB/s

Average Bench

(Based on 7,038 samples)
Min Avg Max
701 Read 1,487 1,863
202 Write 832 1,217
321 Mixed 626 851
111 SusWrite 592 1,149
196% 884 MB/s
Min Avg Max
26.4 4K Read 54.2 51.8
30.7 4K Write 108 161
20.1 4K Mixed 48.2 62.3
201% 70.3 MB/s
Min Avg Max
285 DQ Read 847 1,210
107 DQ Write 284 386
129 DQ Mixed 429 572
352% 520 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
78GB free (System drive)
Firmware: BXW7300Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 35 37 38 38 35 35 MB/s
Read 4,662
Write 41
Mixed 78.8
SusWrite 36.3
250% 1,204 MB/s
4K Read 543
4K Write 2.7
4K Mixed 4.7
830% 184 MB/s
96GB free (System drive)
Firmware: BXW7 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 700 548 460 453 457 437 MB/s
Read 1,566
Write 1,045
Mixed 691
SusWrite 509
211% 953 MB/s
4K Read 43.8
4K Write 124
4K Mixed 54.6
202% 74.3 MB/s
DQ Read 924
DQ Write 315
DQ Mixed 544
421% 594 MB/s
72GB free (System drive)
Firmware: BXW74H0Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 572 556 546 544 525 512 MB/s
Read 1,510
Write 663
Mixed 623
SusWrite 543
184% 835 MB/s
4K Read 43.2
4K Write 110
4K Mixed 50.8
189% 68.1 MB/s
DQ Read 1,170
DQ Write 238
DQ Mixed 372
359% 593 MB/s
139GB free
Firmware: BXW7300Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 955 974 977 945 884 900 MB/s
Read 1,135
Write 975
Mixed 623
SusWrite 939
206% 918 MB/s
4K Read 31.1
4K Write 104
4K Mixed 44.6
159% 59.9 MB/s
DQ Read 777
DQ Write 390
DQ Mixed 574
429% 580 MB/s
143GB free (System drive)
Firmware: BXW7300Q Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 706 687 662 663 676 667 MB/s
Read 1182
Write 900
Mixed 600
SusWrite 677
187% 840 MB/s
4K Read 45.3
4K Write 119
4K Mixed 53.2
200% 72.6 MB/s
DQ Read 794
DQ Write 317
DQ Mixed 515
392% 542 MB/s
7,038 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,556,009 SSDs tested.


AmazonUS $19414 mins
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Typical SM951 NVMe PCIe M.2 256GB Builds (Compare 579 builds) See popular component choices, score breakdowns and rankings.
Gaming 33%
Sail boat
Desktop 76%
Workstation 28%

System: Asus G752VY

EDIT WITH CUSTOM PC BUILDER Value: 14% - Very poor Total price: $194

Popular SM951 NVMe PCIe M.2 256GB systems:

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Solid State Drive Rankings (Price vs Performance) August 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.


Added n/a ago.


9 months ago.

You will not be able to purchase a Samsung SM951 directly from a retailer, as this is SSD is manufactured for OEMs. However, I was recently gifted this from a friend who picked it up in used condition. Great SSD for the value, as this tends to go for $30. Not the best choice if you are going to be storing tons of games, as 256GB is quite limited. But as a boot or file storing drive, this drive has excellent value and mid-tier performance. Pretty much what you'd expect from Samsung.


3 years ago.

Exceptional performance for OEM

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

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