Average Bench: 51% (615th of 848)

Based on 176 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 48.9% 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 21.1MB/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 24.2%. 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 99.6MB/s
Avg. 4K-64Thread Mixed IO Speed 21.9MB/s
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Average Bench

(Based on 176 samples)
Min Avg Max
358 Read 464 497
25.3 Write 99.6 135
49.8 Mixed 151 214
51.4% 238 MB/s
Min Avg Max
15.3 4K Read 21.1 27.5
25.3 4K Write 47.1 78.9
7.99 4K Mixed 10.8 13.4
70.8% 26.3 MB/s
Min Avg Max
19.4 DQ Read 175 354
33.5 DQ Write 90.7 138
8.75 DQ Mixed 21.9 33.3
45.8% 95.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
36GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 497
Write 39
Mixed 65.7
42% 200 MB/s
4K Read 22
4K Write 51.7
4K Mixed 11.6
76% 28.4 MB/s
DQ Read 354
DQ Write 40.8
DQ Mixed 27.1
63% 141 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 478
Write 131
Mixed 201
59% 270 MB/s
4K Read 21.8
4K Write 59.2
4K Mixed 8.47
75% 29.8 MB/s
DQ Read 19.9
DQ Write 58.3
DQ Mixed 8.56
15% 28.9 MB/s
10GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 486
Write 25.1
Mixed 56.2
40% 189 MB/s
4K Read 24.5
4K Write 36.5
4K Mixed 6.36
64% 22.5 MB/s
DQ Read 331
DQ Write 39
DQ Mixed 24.5
59% 131 MB/s
45GB free
Firmware: EXT08D0Q
SYSTEM 4KALIGNED
Read 473
Write 104
Mixed 149
52% 242 MB/s
4K Read 21
4K Write 40.8
4K Mixed 8.28
64% 23.4 MB/s
DQ Read 21.4
DQ Write 53.1
DQ Mixed 8.7
15% 27.7 MB/s
2GB free
Firmware: EXT07D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 354
Write 25.9
Mixed 59.7
31% 147 MB/s
4K Read 25.3
4K Write 39.4
4K Mixed 11.8
74% 25.5 MB/s
DQ Read 270
DQ Write 48.6
DQ Mixed 12.9
47% 111 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 447
Write 132
Mixed 207
57% 262 MB/s
4K Read 17.1
4K Write 35.4
4K Mixed 9.03
56% 20.5 MB/s
DQ Read 20.4
DQ Write 39
DQ Mixed 22.3
19% 27.2 MB/s
77GB free
Firmware: EXT08D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 459
Write 108
Mixed 170
53% 246 MB/s
4K Read 12.7
4K Write 27.6
4K Mixed 8.73
45% 16.3 MB/s
DQ Read 151
DQ Write 86.2
DQ Mixed 19.7
41% 85.7 MB/s
176 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,595,267 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 677 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 74%
Battleship
Desktop
Desktop 68%
Battle cruiser
Workstation
Workstation 65%
Destroyer

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 69% - Good Total price: $899

Popular PM851 2.5 7mm 128GB systems:

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Solid State Drive Rankings (Price vs Performance) April 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

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The Best.
CPUGPUSSD
Intel Core i7-7700K $310Nvidia GTX 1070 $330Samsung 850 Evo 250GB $106
Intel Core i5-7600K $229AMD RX 480 $217Samsung 850 Pro 256GB $140
Intel Pentium G4560 $60Nvidia GTX 1060-6GB $219Samsung 850 Evo 500GB $170
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $122SanDisk Extreme 64GB $35
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $137SanDisk Ultra Fit 32GB $9
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