Average Bench: 57.2% (815th of 1058)

Based on 1,178 user benchmarks.  Model: SAMSUNG SSD PM851 mSATA 128GB

Average average bench

The Samsung PM851 mSATA 128GB averaged 42.8% 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-64Thread Read Speed 312MB/s
Avg. 4K Random Read Speed 21.1MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 128GB is 30.5%. This is a relatively narrow range which indicates that the Samsung PM851 mSATA 128GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 103MB/s
Avg. Sequential Write Speed 113MB/s
ADVERTISEMENT

Average Bench

(Based on 1,178 samples)
Min Avg Max
315 Read 417 488
37.4 Write 113 138
64.3 Mixed 131 159
34.6 SusWrite 103 133
41.8% 191 MB/s
Min Avg Max
10.5 4K Read 21.1 29
22.2 4K Write 51.6 84.8
12.6 4K Mixed 18.5 23.4
83% 30.4 MB/s
Min Avg Max
129 DQ Read 312 365
36.3 DQ Write 110 141
36.3 DQ Mixed 56.5 64.9
82.3% 159 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
84GB free (System drive)
Firmware: AD0Q
SusWrite @10s intervals: 130 129 131 131 130 131 MB/s
Read 426
Write 136
Mixed 156
SusWrite 130
47% 212 MB/s
4K Read 28.7
4K Write 85.4
4K Mixed 23.4
119% 45.8 MB/s
DQ Read 353
DQ Write 138
DQ Mixed 63
95% 185 MB/s
88GB free (System drive)
Firmware: EXT49D0Q
SusWrite @10s intervals: 112 104 121 121 120 120 MB/s
Read 453
Write 104
Mixed 147
SusWrite 116
45% 205 MB/s
4K Read 28.1
4K Write 75.3
4K Mixed 22
111% 41.8 MB/s
DQ Read 349
DQ Write 128
DQ Mixed 59.1
91% 179 MB/s
8GB free
Firmware: EXT49D0Q
SusWrite @10s intervals: 0 0 0 0 95 48 MB/s
Read 398
Write 88
Mixed 93
SusWrite 23.8
32% 151 MB/s
4K Read 24.8
4K Write 60.6
4K Mixed 21.5
97% 35.6 MB/s
DQ Read 339
DQ Write 112
DQ Mixed 60.7
88% 171 MB/s
40GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 50 45 44 45 40 43 MB/s
Read 361
Write 64.5
Mixed 66.2
SusWrite 44.5
29% 134 MB/s
4K Read 20.6
4K Write 32.3
4K Mixed 20.4
74% 24.4 MB/s
DQ Read 357
DQ Write 52.2
DQ Mixed 51.6
77% 154 MB/s
59GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 120 123 125 128 129 128 MB/s
Read 425
Write 131
Mixed 145
SusWrite 126
45% 207 MB/s
4K Read 16.1
4K Write 25.5
4K Mixed 15.9
58% 19.2 MB/s
DQ Read 153
DQ Write 125
DQ Mixed 51.8
62% 110 MB/s
1,178 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 46,975,506 SSDs tested.

Typical PM851 mSATA 128GB Builds (Compare 1,880 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 6%
Tree trunk
Desktop
Desktop 54%
Yacht
Workstation
Workstation 6%
Tree trunk

System: Dell Latitude E7240

EDIT WITH CUSTOM PC BUILDER

Popular PM851 mSATA 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) September 2021 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

1058 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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $350Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $78SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback