Average Bench: 51.3% (613th of 848)

Based on 165 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 48.6% 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 21.2MB/s
Avg. Sequential Read Speed 464MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 25.2%. 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 101MB/s
Avg. 4K-64Thread Mixed IO Speed 22MB/s
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Average Bench

(Based on 165 samples)
Min Avg Max
360 Read 464 498
25.7 Write 101 135
51.9 Mixed 153 214
51.7% 239 MB/s
Min Avg Max
15.6 4K Read 21.2 27.5
25 4K Write 47.3 78.1
8.08 4K Mixed 10.9 13.5
71.2% 26.5 MB/s
Min Avg Max
19.3 DQ Read 177 355
33.2 DQ Write 92.4 138
8.85 DQ Mixed 22 33.3
46.4% 97 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
76GB free
Firmware: EXT07D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 489
Write 90.2
Mixed 164
53% 248 MB/s
4K Read 24.7
4K Write 67.3
4K Mixed 13.7
90% 35.2 MB/s
DQ Read 355
DQ Write 134
DQ Mixed 32.1
80% 174 MB/s
75GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 479
Write 126
Mixed 217
60% 274 MB/s
4K Read 26.4
4K Write 61.3
4K Mixed 13.5
90% 33.8 MB/s
DQ Read 26.8
DQ Write 134
DQ Mixed 31.9
39% 64.2 MB/s
76GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 485
Write 135
Mixed 211
60% 277 MB/s
4K Read 25.8
4K Write 55
4K Mixed 11.5
83% 30.8 MB/s
DQ Read 30.3
DQ Write 136
DQ Mixed 11.5
30% 59.2 MB/s
67GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 479
Write 75.7
Mixed 97.3
46% 217 MB/s
4K Read 24.3
4K Write 46.5
4K Mixed 8.92
73% 26.6 MB/s
DQ Read 225
DQ Write 114
DQ Mixed 28.8
59% 122 MB/s
61GB free
Firmware: EXT08D0Q
SYSTEM 4KALIGNED
Read 489
Write 89.9
Mixed 87.2
47% 222 MB/s
4K Read 21.6
4K Write 41
4K Mixed 10.1
67% 24.2 MB/s
DQ Read 226
DQ Write 74.7
DQ Mixed 26.4
52% 109 MB/s
42GB free
Firmware: EXT07D0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 360
Write 133
Mixed 199
50% 231 MB/s
4K Read 22
4K Write 42.2
4K Mixed 13
72% 25.7 MB/s
DQ Read 137
DQ Write 121
DQ Mixed 30.2
50% 96.3 MB/s
40GB free
Firmware: EXT07D0Q
SYSTEM 4KALIGNED
Read 488
Write 89.7
Mixed 137
51% 238 MB/s
4K Read 26.6
4K Write 33.4
4K Mixed 10.9
72% 23.6 MB/s
DQ Read 26
DQ Write 46.7
DQ Mixed 11.7
16% 28.1 MB/s
165 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,355,258 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 596 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 73%
Battleship
Desktop
Desktop 68%
Battle cruiser
Workstation
Workstation 65%
Destroyer

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 78% - Very good Total price: $732

Popular PM851 2.5 7mm 128GB 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.

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  • - GPU tests include: six 3D game simulations.
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Solid State Drive Rankings (Price vs Performance) March 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]

848 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.
CPUGPUSSD
Intel Core i7-7700K $310Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
AMD Ryzen 7 1700 $325AMD RX 480 $193Samsung 850 Pro 256GB $138
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $235Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $110SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $650SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $50Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $9
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