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Samsung

PM851 mSATA 128GB

▲ 500 ▼

Release date ≈ Q4 2014.

Average Bench: 56% (840th of 1072)

Based on 1,419 user benchmarks.  Model: SAMSUNG SSD PM851 mSATA 128GB
Poor: 38%Average: 56% Great: 71%

Popular builds with this SSD

Average average bench

The Samsung PM851 mSATA 128GB averaged 43.9% 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 303MB/s
Avg. 4K Random Read Speed 21.1MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 128GB is 33.1%. This is a relatively narrow range which indicates that the Samsung PM851 mSATA 128GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 97.8MB/s
Avg. Sequential Write Speed 108MB/s
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Average Bench

(Based on 1,419 samples)
Rank 84056%
Min Avg Max
312 Read 412 481
35.9 Write 108 138
58.8 Mixed 127 159
30.8 SusWrite 97.8 133
40.6% 186 MB/s
Min Avg Max
10.7 4K Read 21.1 28.8
22.3 4K Write 50 83.5
12.5 4K Mixed 18.3 23.3
81.9% 29.8 MB/s
Min Avg Max
108 DQ Read 303 363
32.6 DQ Write 104 140
30.6 DQ Mixed 54.7 64.6
79.4% 154 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
61GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 115 115 102 113 114 98 MB/s
65.5% Good
Read 465
Write 111
Mixed 140
SusWrite 109
45% 206 MB/s
4K Read 24.9
4K Write 57
4K Mixed 23.5
98% 35.1 MB/s
DQ Read 350
DQ Write 124
DQ Mixed 63.3
92% 179 MB/s
93GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 73 74 81 83 80 78 MB/s
54.1% Above average
Read 430
Write 110
Mixed 122
SusWrite 78.3
40% 185 MB/s
4K Read 20.8
4K Write 46.2
4K Mixed 19.6
81% 28.9 MB/s
DQ Read 258
DQ Write 82.2
DQ Mixed 52.8
70% 131 MB/s
53GB free (System drive)
Firmware: EXT49D0Q
SusWrite @10s intervals: 100 92 95 118 118 116 MB/s
52.6% Above average
Read 428
Write 107
Mixed 133
SusWrite 106
42% 194 MB/s
4K Read 16.6
4K Write 30
4K Mixed 16.8
63% 21.1 MB/s
DQ Read 329
DQ Write 111
DQ Mixed 55.9
84% 165 MB/s
31GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 43 34 30 47 70 59 MB/s
47.2% Average
Read 440
Write 120
Mixed 119
SusWrite 47.2
39% 182 MB/s
4K Read 19
4K Write 28.9
4K Mixed 16.9
66% 21.6 MB/s
DQ Read 236
DQ Write 65.7
DQ Mixed 54
65% 119 MB/s
70GB free (System drive)
Firmware: EXT49D0Q
SusWrite @10s intervals: 77 95 103 111 104 106 MB/s
42.6% Average
Read 334
Write 120
Mixed 129
SusWrite 99.2
38% 171 MB/s
4K Read 12.9
4K Write 23.6
4K Mixed 11.8
47% 16.1 MB/s
DQ Read 269
DQ Write 129
DQ Mixed 59.3
81% 153 MB/s
1,419 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,665,264 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 mSATA 128GB Builds (Compare 1,094 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 5%
Tree trunk
Desktop
Desktop 43%
Speed boat
Workstation
Workstation 4%
Tree trunk

System: Dell Latitude E7250

CPU
Core i5-5300UIntelBench 42%, 29,898 samples624x
Core i7-5600UIntelBench 50%, 20,423 samples438x
Core i5-5200UIntelBench 42%, 107,407 samples24x
GPU
HD 5500 (Mobile 0.95 GHz)IntelBench 4%, 231,498 samples1,089x
Iris Pro Graphics 5200IntelBench 4%, 1 sample1x
GeForce GT 730NvidiaBench 5%, 164,888 samples1x
SSD
PM851 mSATA 128GBSamsungBench 56%, 1,419 samples1x
RAM
HMT41GS6BFR8A-PB 1x8GBHynixBench 28%, 77,702 samples149x
HMT41GS6BFR8A-PB 2x8GBHynixBench 52%, 34,976 samples53x
M471B1G73QH0-YK0 1x8GBSamsungBench 28%, 40,451 samples52x
EDIT WITH CUSTOM PC BUILDER

Popular PM851 mSATA 128GB systems:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our 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 value for money 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
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  • - Reports are generated and presented on userbenchmark.com
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Solid State Drive Rankings (Price vs Performance) April 2024 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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1072 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 i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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