Average Bench: 59.7% (742nd of 1018)

Based on 1,525 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 40.3% 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 295MB/s
Avg. 4K Random Read Speed 22.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 35.8%. This is a relatively wide range which indicates that the Samsung PM851 2.5 7mm 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 103MB/s
Avg. Sequential Write Speed 115MB/s
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Average Bench

(Based on 1,525 samples)
Min Avg Max
339 Read 433 498
38.5 Write 115 139
60.9 Mixed 133 163
29.6 SusWrite 103 134
42.8% 196 MB/s
Min Avg Max
12.6 4K Read 22.6 30.5
25.8 4K Write 57.7 100
12.8 4K Mixed 20 26
90.5% 33.4 MB/s
Min Avg Max
28.4 DQ Read 295 364
35.4 DQ Write 110 142
24.7 DQ Mixed 54.3 65.1
79.1% 153 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
86GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 121 124 126 126 126 126 MB/s
Read 485
Write 128
Mixed 158
SusWrite 125
49% 224 MB/s
4K Read 29.3
4K Write 96.8
4K Mixed 25.6
128% 50.6 MB/s
DQ Read 360
DQ Write 129
DQ Mixed 62.1
94% 184 MB/s
15GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 65 86 87 87 100 113 MB/s
Read 484
Write 52.3
Mixed 86.2
SusWrite 89.5
38% 178 MB/s
4K Read 22.6
4K Write 41.9
4K Mixed 17.3
79% 27.3 MB/s
DQ Read 355
DQ Write 58.4
DQ Mixed 53.1
78% 156 MB/s
90GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 47 35 37 34 56 54 MB/s
Read 407
Write 24.8
Mixed 66.1
SusWrite 43.7
29% 135 MB/s
4K Read 22
4K Write 35.8
4K Mixed 16.1
73% 24.6 MB/s
DQ Read 319
DQ Write 38.5
DQ Mixed 47.8
68% 135 MB/s
86GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 61 37 37 57 94 121 MB/s
Read 411
Write 73.4
Mixed 41.7
SusWrite 67.6
32% 148 MB/s
4K Read 20
4K Write 28.6
4K Mixed 13.4
63% 20.7 MB/s
DQ Read 362
DQ Write 28.9
DQ Mixed 38.6
68% 143 MB/s
1,525 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 23,925,952 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 3,517 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 64%
Destroyer
Workstation
Workstation 57%
Gunboat

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 54% - Above average Total price: $738

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) April 2020 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

1018 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 i5-9400F $146Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $210Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2070S (Super) $505Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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