Average Bench: 57.8% (811th of 1058)

Based on 3,025 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 42.2% 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 319MB/s
Avg. 4K Random Read Speed 22.5MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 34.2%. 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. Sustained Write Speed 95.6MB/s
Avg. Sequential Write Speed 102MB/s
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Average Bench

(Based on 3,025 samples)
Min Avg Max
316 Read 423 493
29.5 Write 102 138
56.6 Mixed 122 162
26.3 SusWrite 95.6 133
40.5% 186 MB/s
Min Avg Max
12.9 4K Read 22.5 30.2
22.6 4K Write 51.7 93.5
11.5 4K Mixed 19.1 25.4
85.9% 31.1 MB/s
Min Avg Max
163 DQ Read 319 366
31.2 DQ Write 99.2 141
31.4 DQ Mixed 54.3 64.6
80.5% 157 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
87GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 109 117 124 109 107 111 MB/s
Read 473
Write 136
Mixed 153
SusWrite 113
48% 219 MB/s
4K Read 24.1
4K Write 47.6
4K Mixed 21.4
89% 31 MB/s
DQ Read 340
DQ Write 134
DQ Mixed 64.7
93% 180 MB/s
78GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 110 106 119 117 105 110 MB/s
Read 423
Write 122
Mixed 139
SusWrite 111
44% 199 MB/s
4K Read 22.3
4K Write 49
4K Mixed 18.2
83% 29.8 MB/s
DQ Read 271
DQ Write 115
DQ Mixed 56.5
78% 147 MB/s
9GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 75 38 36 38 52 42 MB/s
Read 482
Write 50
Mixed 68.6
SusWrite 46.8
34% 162 MB/s
4K Read 25.9
4K Write 31.6
4K Mixed 20.7
82% 26.1 MB/s
DQ Read 348
DQ Write 51.7
DQ Mixed 49.7
75% 150 MB/s
10GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 31 30 26 27 27 31 MB/s
Read 479
Write 35
Mixed 58.7
SusWrite 28.7
32% 150 MB/s
4K Read 24.1
4K Write 28.5
4K Mixed 19.9
77% 24.2 MB/s
DQ Read 352
DQ Write 27.6
DQ Mixed 42.8
68% 141 MB/s
85GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 114 123 124 114 119 119 MB/s
Read 457
Write 126
Mixed 145
SusWrite 119
46% 212 MB/s
4K Read 25
4K Write 43.7
4K Mixed 7.1
70% 25.3 MB/s
DQ Read 189
DQ Write 58.5
DQ Mixed 43.3
53% 97 MB/s
3,025 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,077,776 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 2,119 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 78%
Battleship

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 57% - Above average Total price: $750

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.
  • - 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]

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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

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 $44
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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