Average Bench: 52.9% (730th of 956)

Based on 547 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 47.1% 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 21.9MB/s
Avg. Sequential Read Speed 456MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 31.3%. 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 100MB/s
Avg. Sequential Write Speed 100MB/s
ADVERTISEMENT

Average Bench

(Based on 547 samples)
Min Avg Max
356 Read 456 498
28.1 Write 100 137
49.8 Mixed 143 214
32.1 SusWrite 100 133
43.5% 200 MB/s
Min Avg Max
14.7 4K Read 21.9 29
24 4K Write 49.7 86.6
6.99 4K Mixed 12.7 22.8
75.7% 28.1 MB/s
Min Avg Max
18.7 DQ Read 206 361
34.7 DQ Write 93 140
8.57 DQ Mixed 28.6 62.1
53.2% 109 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
79GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 118 114 118 118 121 118 MB/s
Read 498
Write 127
Mixed 153
SusWrite 118
49% 224 MB/s
4K Read 29.5
4K Write 84.8
4K Mixed 23.2
119% 45.8 MB/s
DQ Read 361
DQ Write 127
DQ Mixed 62.1
94% 183 MB/s
21GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 105 89 106 98 88 84 MB/s
Read 485
Write 107
Mixed 139
SusWrite 94.9
45% 207 MB/s
4K Read 28.3
4K Write 93.6
4K Mixed 23.1
122% 48.3 MB/s
DQ Read 357
DQ Write 85.1
DQ Mixed 60.6
86% 168 MB/s
90GB free
Firmware: EXT08D0Q
SusWrite @10s intervals: 135 134 134 134 134 133 MB/s
Read 459
Write 137
Mixed 159
SusWrite 134
49% 222 MB/s
4K Read 29.4
4K Write 77.6
4K Mixed 24.8
117% 43.9 MB/s
DQ Read 278
DQ Write 140
DQ Mixed 70.2
89% 163 MB/s
100GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 133 129 132 132 132 132 MB/s
Read 413
Write 137
Mixed 153
SusWrite 132
46% 208 MB/s
4K Read 15.7
4K Write 41.5
4K Mixed 18.2
69% 25.1 MB/s
DQ Read 358
DQ Write 141
DQ Mixed 59.8
94% 186 MB/s
8GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 27 23 22 21 23 21 MB/s
Read 356
Write 27.8
Mixed 46.5
SusWrite 22.9
24% 113 MB/s
4K Read 22.2
4K Write 20.3
4K Mixed 19.7
70% 20.7 MB/s
DQ Read 308
DQ Write 18.7
DQ Mixed 38.9
60% 122 MB/s
547 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,570,448 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 1,917 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: 93% - Outstanding Total price: $843

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.

UserBenchmark of the month

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) September 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]

ADVERTISEMENT

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

956 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 $370Nvidia GTX 1070 $344Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $114
Intel Core i5-8600K $260AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $150SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $898SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $167SanDisk Ultra Fit 32GB $11
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback