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Samsung

PM851 M.2 2280 128GB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 55% (838th of 1058)

Based on 1,394 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 128GB
Poor: 36%Average: 55% Great: 73%

Popular builds with this SSD

Average average bench

The Samsung PM851 M.2 2280 128GB averaged 44.9% 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 311MB/s
Avg. 4K Random Read Speed 21.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 128GB is 36.5%. This is a relatively wide range which indicates that the Samsung PM851 M.2 2280 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 85MB/s
Avg. Sequential Write Speed 95.8MB/s
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Average Bench

(Based on 1,394 samples)
Rank 83855%
Min Avg Max
321 Read 423 494
29.4 Write 95.8 139
52.6 Mixed 115 163
26.1 SusWrite 85 133
39.1% 180 MB/s
Min Avg Max
10.9 4K Read 21.6 30.3
21.8 4K Write 45.4 86
11.2 4K Mixed 18.1 25.2
80% 28.4 MB/s
Min Avg Max
160 DQ Read 311 364
28.7 DQ Write 90.9 142
30.9 DQ Mixed 53.5 65.4
77.8% 152 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
44GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 102 118 121 110 96 105 MB/s
65.5% Good
Read 489
Write 97.8
Mixed 106
SusWrite 108
43% 200 MB/s
4K Read 26.4
4K Write 54.6
4K Mixed 21.9
97% 34.3 MB/s
DQ Read 361
DQ Write 98.2
DQ Mixed 57.3
87% 172 MB/s
75GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 133 134 134 134 133 133 MB/s
63.3% Good
Read 447
Write 137
Mixed 158
SusWrite 133
48% 219 MB/s
4K Read 23.6
4K Write 49
4K Mixed 20.2
88% 30.9 MB/s
DQ Read 354
DQ Write 139
DQ Mixed 64.7
96% 186 MB/s
75GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 121 121 132 132 133 132 MB/s
63.3% Good
Read 446
Write 137
Mixed 155
SusWrite 128
48% 217 MB/s
4K Read 24.1
4K Write 49
4K Mixed 20.2
88% 31.1 MB/s
DQ Read 355
DQ Write 141
DQ Mixed 64.8
96% 187 MB/s
86GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 98 62 48 48 49 48 MB/s
50.2% Above average
Read 395
Write 133
Mixed 141
SusWrite 59
40% 182 MB/s
4K Read 14.4
4K Write 50.3
4K Mixed 15.2
68% 26.6 MB/s
DQ Read 345
DQ Write 126
DQ Mixed 59.6
90% 177 MB/s
29GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 34 31 29 27 26 28 MB/s
47.7% Average
Read 379
Write 32.8
Mixed 51.1
SusWrite 29.1
26% 123 MB/s
4K Read 21.1
4K Write 27.1
4K Mixed 19.9
72% 22.7 MB/s
DQ Read 360
DQ Write 31.4
DQ Mixed 41.8
70% 145 MB/s
28GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 31 42 59 63 52 40 MB/s
34.3% Below average
Read 316
Write 42.7
Mixed 62.7
SusWrite 47.8
25% 117 MB/s
4K Read 8.5
4K Write 16.7
4K Mixed 10.2
35% 11.8 MB/s
DQ Read 326
DQ Write 32.9
DQ Mixed 35.2
62% 132 MB/s
1,394 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 57,419,383 SSDs tested.

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical PM851 M.2 2280 128GB Builds (Compare 1,006 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 60%
Destroyer
Workstation
Workstation 7%
Tree trunk

System: Alienware 15

CPU
Core i7-4710HQIntelBench 66%, 72,814 samples478x
Core i7-4720HQIntelBench 67%, 78,220 samples355x
Core i5-4210HIntelBench 57%, 11,845 samples161x
GPU
HD 4600 (Mobile 1.15 GHz)IntelBench 3%, 258,755 samples548x
GTX 970MNvidiaBench 32%, 25,203 samples235x
GTX 980MNvidiaBench 41%, 11,319 samples109x
SSD
PM851 M.2 2280 128GBSamsungBench 55%, 1,394 samples106x
RAM
HMT41GS6BFR8A-PB 2x8GBHynixBench 52%, 32,927 samples214x
HMT451S6BFR8A-PB 2x4GBHynixBench 48%, 30,186 samples125x
KN2M64-ETB 2x8GBKingstonBench 51%, 2,957 samples85x
EDIT WITH CUSTOM PC BUILDER

Popular PM851 M.2 2280 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

Gaming Desktop ProGaming

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) August 2022 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.

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Speed Comparisons

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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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-12600K $275Nvidia RTX 3060-Ti $470Crucial MX500 250GB $40
Intel Core i5-12400F $160Nvidia RTX 3070 $535Samsung 850 Evo 120GB $106
Intel Core i7-12700K $350Nvidia RTX 3050 $325Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $58SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $33Corsair Vengeance LPX DDR4 3000 C15 2x8GB $64SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $449SanDisk Ultra Fit 32GB $16
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