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Samsung

PM851 M.2 2280 128GB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 55% (790th of 1016)

Based on 957 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 128GB
Poor: 37%Average: 55% Great: 70%

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 293MB/s
Avg. 4K Random Read Speed 21.8MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 128GB is 32.4%. 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 88.6MB/s
Avg. Sequential Write Speed 97MB/s
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Average Bench

(Based on 957 samples)
Rank 79055%
Min Avg Max
314 Read 430 492
30.3 Write 97 139
50.1 Mixed 120 169
26.4 SusWrite 88.6 133
40% 184 MB/s
Min Avg Max
11.4 4K Read 21.8 28.8
21.6 4K Write 45.9 74.6
9.25 4K Mixed 17.6 23.6
79.8% 28.4 MB/s
Min Avg Max
26.2 DQ Read 293 365
29.2 DQ Write 93.1 140
10.6 DQ Mixed 49.6 64.5
74.1% 145 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
72GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 136 135 134 136 136 135 MB/s
72.6% Very good
Read 483
Write 141
Mixed 164
SusWrite 135
51% 231 MB/s
4K Read 31.5
4K Write 66
4K Mixed 23.9
113% 40.5 MB/s
DQ Read 363
DQ Write 142
DQ Mixed 62.9
97% 189 MB/s
83GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 134 130 133 133 131 133 MB/s
68.4% Good
Read 468
Write 140
Mixed 158
SusWrite 132
49% 224 MB/s
4K Read 26.4
4K Write 61.9
4K Mixed 22.6
102% 37 MB/s
DQ Read 362
DQ Write 141
DQ Mixed 66.1
98% 190 MB/s
72GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 136 135 134 135 135 135 MB/s
65% Good
Read 394
Write 138
Mixed 145
SusWrite 135
45% 203 MB/s
4K Read 27.8
4K Write 50.3
4K Mixed 23.6
99% 33.9 MB/s
DQ Read 358
DQ Write 143
DQ Mixed 58.7
94% 187 MB/s
57GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 84 88 114 116 120 122 MB/s
63.1% Good
Read 458
Write 100
Mixed 115
SusWrite 107
42% 195 MB/s
4K Read 25.7
4K Write 51.7
4K Mixed 21.7
94% 33 MB/s
DQ Read 340
DQ Write 105
DQ Mixed 58.9
86% 168 MB/s
118GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 134 135 134 134 134 134 MB/s
59.5% Above average
Read 378
Write 138
Mixed 152
SusWrite 134
44% 201 MB/s
4K Read 20.8
4K Write 68.8
4K Mixed 15.3
88% 35 MB/s
DQ Read 336
DQ Write 139
DQ Mixed 62.4
92% 179 MB/s
51GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 116 120 113 103 83 107 MB/s
55.7% Above average
Read 446
Write 94.4
Mixed 123
SusWrite 107
42% 193 MB/s
4K Read 22.6
4K Write 41.5
4K Mixed 18
79% 27.4 MB/s
DQ Read 246
DQ Write 91.7
DQ Mixed 57.6
72% 132 MB/s
24GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 105 101 89 76 56 45 MB/s
51.3% Above average
Read 410
Write 122
Mixed 136
SusWrite 78.7
41% 187 MB/s
4K Read 19.7
4K Write 31.1
4K Mixed 17
68% 22.6 MB/s
DQ Read 302
DQ Write 123
DQ Mixed 54.3
82% 160 MB/s
957 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,680,567 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 1,861 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 48%
Yacht
Workstation
Workstation 33%
Sail boat

System: Alienware 17 R2

CPU
Core i7-4710HQIntelBench 56%, 49,095 samples871x
Core i7-4720HQIntelBench 57%, 54,543 samples689x
Core i7-4980HQIntelBench 63%, 1,153 samples300x
GPU
HD 4600 (Mobile 1.15 GHz)IntelBench 3%, 197,765 samples812x
GTX 980MNvidiaBench 41%, 11,376 samples412x
GTX 970MNvidiaBench 32%, 18,116 samples356x
SSD
PM851 M.2 2280 128GBSamsungBench 55%, 957 samples213x
RAM
HMT41GS6BFR8A-PB 2x8GBHynixBench 53%, 21,592 samples457x
M471B1G73EB0-YK0 2x8GBSamsungBench 52%, 6,767 samples231x
HMT451S6BFR8A-PB 2x4GBHynixBench 48%, 24,538 samples187x
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 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) January 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.

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Speed Comparisons

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1016 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 i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $43
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $340Samsung 850 Pro 512GB $204
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $643SanDisk Ultra Fit 32GB $16
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