Average Bench: 51.4% (733rd of 955)

Based on 486 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 21.5MB/s
Avg. Sequential Read Speed 461MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 29%. 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. Sustained Write Speed 96.4MB/s
Avg. Sequential Write Speed 99.5MB/s
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Average Bench

(Based on 486 samples)
Min Avg Max
356 Read 461 498
27.1 Write 99.5 136
47 Mixed 149 214
30.2 SusWrite 96.4 135
43.8% 201 MB/s
Min Avg Max
14.1 4K Read 21.5 28.4
23.4 4K Write 48.5 84.5
6.94 4K Mixed 11 13.8
72.4% 27 MB/s
Min Avg Max
18.5 DQ Read 181 354
33.5 DQ Write 90.9 139
8.45 DQ Mixed 22.6 34.4
47% 98.3 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
64GB free
Firmware: EXT07D0Q
SusWrite @10s intervals: 135 133 133 133 132 132 MB/s
Read 499
Write 140
Mixed 172
SusWrite 133
52% 236 MB/s
4K Read 27.6
4K Write 68.2
4K Mixed 24.6
110% 40.1 MB/s
DQ Read 345
DQ Write 141
DQ Mixed 62.4
94% 183 MB/s
95GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 119 92 57 121 124 126 MB/s
Read 462
Write 108
Mixed 147
SusWrite 106
45% 206 MB/s
4K Read 20.8
4K Write 54.3
4K Mixed 19.1
85% 31.4 MB/s
DQ Read 336
DQ Write 128
DQ Mixed 59.9
90% 175 MB/s
52GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 74 62 62 58 59 60 MB/s
Read 446
Write 128
Mixed 136
SusWrite 62.7
42% 193 MB/s
4K Read 19.8
4K Write 44.7
4K Mixed 19.6
79% 28 MB/s
DQ Read 362
DQ Write 101
DQ Mixed 59.1
88% 174 MB/s
80GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 112 53 116 132 132 131 MB/s
Read 343
Write 137
Mixed 135
SusWrite 113
40% 182 MB/s
4K Read 22.6
4K Write 45.7
4K Mixed 19.8
84% 29.4 MB/s
DQ Read 28.7
DQ Write 101
DQ Mixed 25.1
31% 51.6 MB/s
17GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 23 20 29 37 32 41 MB/s
Read 332
Write 6.8
Mixed 37.3
SusWrite 30.2
22% 102 MB/s
4K Read 20.7
4K Write 24.1
4K Mixed 13.3
61% 19.4 MB/s
DQ Read 175
DQ Write 29.6
DQ Mixed 24.1
38% 76.2 MB/s
486 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,572,550 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 1,696 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 102%
UFO
Desktop
Desktop 70%
Battle cruiser
Workstation
Workstation 69%
Battle cruiser

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 91% - Outstanding Total price: $871

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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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) July 2018 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]

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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.

 Comments

955 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 i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $121
Intel Core i5-8600K $245AMD RX 480 $280Samsung 850 Pro 256GB $136
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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