Average Bench: 51.2% (635th of 873)

Based on 338 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 48.8% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. 4K Random Read Speed 21.4MB/s
Avg. Sequential Read Speed 462MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 25.7%. This is a relatively narrow range which indicates that the Samsung PM851 2.5 7mm 128GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sequential Write Speed 98MB/s
Avg. 4K-64Thread Mixed IO Speed 21.8MB/s
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Average Bench

(Based on 338 samples)
Min Avg Max
356 Read 462 498
27.5 Write 98 136
47.8 Mixed 146 214
50.8% 236 MB/s
Min Avg Max
14.1 4K Read 21.4 28
24.3 4K Write 48 85.6
7.2 4K Mixed 10.8 13.5
71.6% 26.7 MB/s
Min Avg Max
19.3 DQ Read 181 353
33.6 DQ Write 90.5 138
8.58 DQ Mixed 21.8 33.4
46.5% 97.8 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
17GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 483
Write 111
Mixed 197
57% 264 MB/s
4K Read 25.5
4K Write 66.6
4K Mixed 13.2
91% 35.1 MB/s
DQ Read 325
DQ Write 132
DQ Mixed 33.9
76% 164 MB/s
20GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 490
Write 126
Mixed 208
60% 274 MB/s
4K Read 26.4
4K Write 58.5
4K Mixed 12.2
86% 32.3 MB/s
DQ Read 296
DQ Write 95.7
DQ Mixed 31.6
66% 141 MB/s
6GB free
Firmware: EXT07D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 497
Write 68.1
Mixed 109
48% 225 MB/s
4K Read 27.3
4K Write 84.5
4K Mixed 12.9
103% 41.6 MB/s
DQ Read 28.7
DQ Write 74.6
DQ Mixed 26.5
28% 43.3 MB/s
21GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 471
Write 60.8
Mixed 93.9
44% 209 MB/s
4K Read 26.6
4K Write 49.5
4K Mixed 10.4
80% 28.8 MB/s
DQ Read 355
DQ Write 99.5
DQ Mixed 30.4
74% 162 MB/s
96GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 478
Write 134
Mixed 213
60% 275 MB/s
4K Read 21.9
4K Write 64.8
4K Mixed 10
80% 32.2 MB/s
DQ Read 18.3
DQ Write 136
DQ Mixed 8.24
27% 54.2 MB/s
79GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 502
Write 125
Mixed 188
59% 272 MB/s
4K Read 19.6
4K Write 55.7
4K Mixed 10.8
73% 28.7 MB/s
DQ Read 25.6
DQ Write 75.7
DQ Mixed 11.5
20% 37.6 MB/s
74GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 481
Write 133
Mixed 214
60% 276 MB/s
4K Read 14.1
4K Write 37.6
4K Mixed 8.84
53% 20.2 MB/s
DQ Read 185
DQ Write 134
DQ Mixed 8.37
47% 109 MB/s
78GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 494
Write 113
Mixed 178
57% 261 MB/s
4K Read 19.9
4K Write 55.7
4K Mixed 10.6
73% 28.7 MB/s
DQ Read 24.7
DQ Write 56.9
DQ Mixed 10.1
16% 30.6 MB/s
338 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 5,236,153 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 1,188 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 103%
UFO
Desktop
Desktop 70%
Battleship
Workstation
Workstation 70%
Battle cruiser

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 90% - Outstanding Total price: $910

Popular PM851 2.5 7mm 128GB systems:

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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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Solid State Drive Rankings (Price vs Performance) January 2018 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]

 Comments

873 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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AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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