Average Bench: 59.7% (733rd of 1011)

Based on 992 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 40.2% 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 22.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 32.8%. 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 98MB/s
Avg. Sequential Write Speed 109MB/s
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Average Bench

(Based on 992 samples)
Min Avg Max
342 Read 434 497
38.8 Write 109 139
59 Mixed 128 161
25.2 SusWrite 98 134
41.8% 192 MB/s
Min Avg Max
14.9 4K Read 22.9 30.6
24.4 4K Write 55.9 100
13.4 4K Mixed 19.9 25.4
89.9% 32.9 MB/s
Min Avg Max
160 DQ Read 319 365
31.7 DQ Write 104 141
27.1 DQ Mixed 55.5 65.2
81.9% 160 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
24GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 38 31 27 29 33 32 MB/s
Read 476
Write 48.5
Mixed 84.5
SusWrite 31.6
34% 160 MB/s
4K Read 26.7
4K Write 43.9
4K Mixed 20.3
90% 30.3 MB/s
DQ Read 362
DQ Write 40.3
DQ Mixed 55
77% 152 MB/s
41GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 110 126 109 93 122 122 MB/s
Read 451
Write 55.4
Mixed 87.3
SusWrite 114
38% 177 MB/s
4K Read 23.9
4K Write 28.1
4K Mixed 17.4
73% 23.1 MB/s
DQ Read 364
DQ Write 46.6
DQ Mixed 40.8
72% 150 MB/s
42GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 44 36 39 40 41 37 MB/s
Read 437
Write 61.2
Mixed 75.7
SusWrite 39.4
33% 153 MB/s
4K Read 23
4K Write 32.9
4K Mixed 18.9
76% 24.9 MB/s
DQ Read 361
DQ Write 47.1
DQ Mixed 52.9
77% 154 MB/s
37GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 96 124 115 70 35 40 MB/s
Read 353
Write 79.1
Mixed 81.5
SusWrite 80
32% 148 MB/s
4K Read 16.9
4K Write 34.5
4K Mixed 17.1
66% 22.8 MB/s
DQ Read 353
DQ Write 54.4
DQ Mixed 46
74% 151 MB/s
992 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 16,944,654 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 2,778 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 64%
Destroyer
Workstation
Workstation 58%
Gunboat

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $891

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) August 2019 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

1011 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 $143Nvidia GTX 1660 $220Samsung 850 Evo 250GB $86
Intel Core i5-9600K $219Nvidia GTX 1660-Ti $270Samsung 850 Evo 500GB $102
AMD Ryzen 5 3600 $196AMD RX 580 $173Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $42G.SKILL Trident Z DDR4 3200 C14 4x16GB $799SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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