Average Bench: 190% (22nd of 859)

Based on 3,220 user benchmarks.  Models: SAMSUNG MZHPV256HDGL-00000, SAMSUNG MZHPV256HDGL-000L1

Outstanding average bench

The Samsung SM951 AHCI PCIe M.2 256GB averaged 90.2% 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. Sequential Read Speed 1,721MB/s
Avg. Sequential Mixed IO Speed 1,131MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SM951 AHCI PCIe M.2 256GB is 108%. 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 Read Speed 247MB/s
Avg. 4K-64Thread Write Speed 237MB/s

Average Bench

(Based on 3,220 samples)
Min Avg Max
763 Read 1,721 2,008
475 Write 937 1,209
653 Mixed 1,131 1,444
279% 1,263 MB/s
Min Avg Max
24.1 4K Read 51.6 45.9
42.2 4K Write 105 152
20.4 4K Mixed 36.1 52.2
180% 64.3 MB/s
Min Avg Max
31.2 DQ Read 247 545
84.7 DQ Write 237 373
19.8 DQ Mixed 114 232
121% 199 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
188GB free
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
Read 1,931
Write 1,204
Mixed 1,404
335% 1,513 MB/s
4K Read 43.8
4K Write 130
4K Mixed 50.7
200% 74.8 MB/s
DQ Read 556
DQ Write 375
DQ Mixed 248
244% 393 MB/s
105GB free
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
Read 1,992
Write 883
Mixed 1,211
299% 1,362 MB/s
4K Read 45.5
4K Write 146
4K Mixed 50.9
212% 80.8 MB/s
DQ Read 413
DQ Write 321
DQ Mixed 178
184% 304 MB/s
177GB free
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
Read 1,903
Write 1,107
Mixed 1,336
320% 1,449 MB/s
4K Read 43.3
4K Write 124
4K Mixed 27.5
166% 64.9 MB/s
DQ Read 157
DQ Write 243
DQ Mixed 27.5
69% 143 MB/s
110GB free
Firmware: BXW2500Q Max speed: PCIe 5,000 MB/s
Read 777
Write 701
Mixed 752
166% 744 MB/s
4K Read 37.2
4K Write 110
4K Mixed 27.4
150% 58.3 MB/s
DQ Read 31.1
DQ Write 298
DQ Mixed 21.4
59% 117 MB/s
3,220 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,842,931 SSDs tested.


AmazonUS $134.997 days ago.
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Typical SM951 AHCI PCIe M.2 256GB Builds (Compare 2,113 builds) See popular component choices, score breakdowns and rankings.
Gaming 108%
Desktop 96%
Nuclear submarine
Workstation 86%
Aircraft carrier

Motherboard: MSI X99A SLI PLUS(MS-7885)

EDIT WITH CUSTOM PC BUILDER Value: 97% - Outstanding Total price: $1,050

Popular SM951 AHCI PCIe M.2 256GB compatible motherboards:

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Solid State Drive Rankings (Price vs Performance) September 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]



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See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

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