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Samsung

PM851 M.2 2280 128GB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 54.6% (786th of 1011)

Based on 956 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 128GB
Poor: 37%Average: 54.6% Great: 69%

Popular builds with this SSD

Average average bench

The Samsung PM851 M.2 2280 128GB averaged 45.4% 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 281MB/s
Avg. 4K Random Read Speed 22MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 128GB is 32.6%. This is a relatively narrow range which indicates that the Samsung PM851 M.2 2280 128GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 88.2MB/s
Avg. Sequential Write Speed 95.9MB/s
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Average Bench

(Based on 956 samples)
Rank 78654.6%
Min Avg Max
317 Read 434 493
29.9 Write 95.9 138
49.8 Mixed 122 190
26.6 SusWrite 88.2 132
40.2% 185 MB/s
Min Avg Max
11.4 4K Read 22 28.8
21.6 4K Write 46.1 73.8
8.52 4K Mixed 16.9 23.4
79.3% 28.3 MB/s
Min Avg Max
24.1 DQ Read 281 365
29.2 DQ Write 92.3 140
10.1 DQ Mixed 46.7 64.4
71.1% 140 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
60GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 129 131 133 135 135 135 MB/s
66% Good
Read 434
Write 139
Mixed 150
SusWrite 133
47% 214 MB/s
4K Read 27.4
4K Write 67
4K Mixed 19.4
102% 37.9 MB/s
DQ Read 334
DQ Write 138
DQ Mixed 59.1
90% 177 MB/s
96GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 127 128 131 132 131 132 MB/s
60.4% Good
Read 437
Write 135
Mixed 152
SusWrite 130
47% 214 MB/s
4K Read 18.3
4K Write 54.5
4K Mixed 17.9
80% 30.2 MB/s
DQ Read 360
DQ Write 140
DQ Mixed 60.6
95% 187 MB/s
77GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 32 22 22 22 26 25 MB/s
48.9% Average
Read 398
Write 39.5
Mixed 46
SusWrite 24.9
27% 127 MB/s
4K Read 24.3
4K Write 29.4
4K Mixed 17.5
75% 23.7 MB/s
DQ Read 366
DQ Write 39.1
DQ Mixed 38.4
70% 148 MB/s
92GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 114 112 120 120 121 121 MB/s
48.2% Average
Read 373
Write 125
Mixed 142
SusWrite 118
42% 190 MB/s
4K Read 12.2
4K Write 44.3
4K Mixed 14.2
60% 23.6 MB/s
DQ Read 229
DQ Write 126
DQ Mixed 54.9
74% 136 MB/s
17GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 71 88 38 44 93 104 MB/s
46.8% Average
Read 400
Write 34.8
Mixed 55
SusWrite 73.1
30% 141 MB/s
4K Read 18
4K Write 24.2
4K Mixed 14.4
58% 18.9 MB/s
DQ Read 364
DQ Write 25.7
DQ Mixed 39.8
68% 143 MB/s
24GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 80 89 87 83 82 69 MB/s
45.4% Average
Read 377
Write 117
Mixed 140
SusWrite 81.5
39% 179 MB/s
4K Read 11.5
4K Write 33.6
4K Mixed 15.1
55% 20.1 MB/s
DQ Read 290
DQ Write 92.9
DQ Mixed 46.2
72% 143 MB/s
9GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 30 23 23 23 22 22 MB/s
38% Below average
Read 325
Write 26.7
Mixed 46.5
SusWrite 23.7
22% 105 MB/s
4K Read 15.7
4K Write 21.5
4K Mixed 11.8
50% 16.3 MB/s
DQ Read 353
DQ Write 25.2
DQ Mixed 30.1
62% 136 MB/s
956 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,849,350 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 1,790 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 47%
Yacht
Workstation
Workstation 32%
Sail boat

System: Alienware 17 R2

CPU
Core i7-4710HQIntelBench 54%, 49,769 samples841x
Core i7-4720HQIntelBench 57%, 49,332 samples656x
Core i7-4980HQIntelBench 63%, 1,096 samples292x
GPU
HD 4600 (Mobile 1.15 GHz)IntelBench 3%, 187,383 samples784x
GTX 980MNvidiaBench 42%, 11,292 samples393x
GTX 970MNvidiaBench 32%, 16,456 samples338x
SSD
PM851 M.2 2280 128GBSamsungBench 55%, 956 samples204x
RAM
HMT41GS6BFR8A-PB 2x8GBHynixBench 53%, 20,231 samples443x
M471B1G73EB0-YK0 2x8GBSamsungBench 52%, 6,198 samples226x
HMT451S6BFR8A-PB 2x4GBHynixBench 48%, 22,162 samples181x
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.

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Gaming Desktop Workstation

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) December 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.

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Speed Comparisons

vs Crucial MX500 250GB
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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

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 i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
HDDRAMUSB
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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