TEST
YOUR SSD
ADD TO PC
BUILD

Samsung

PM851 mSATA 128GB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 51.3% (883rd of 1072)

Based on 113 user benchmarks.  Model: SAMSUNG SSD PM851 mSATA
Poor: 34%Average: 51.3% Great: 66%

Popular builds with this SSD

Average average bench

The Samsung PM851 mSATA 128GB averaged 48.7% 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 Random Read Speed 23.3MB/s
Avg. 4K-64Thread Read Speed 254MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 128GB is 32.1%. This is a relatively narrow range which indicates that the Samsung PM851 mSATA 128GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sequential Write Speed 83.7MB/s
Avg. Sustained Write Speed 94.8MB/s
ADVERTISEMENT

Average Bench

(Based on 113 samples)
Rank 88351.3%
Min Avg Max
307 Read 419 488
21.4 Write 83.7 137
34.4 Mixed 117 205
19.1 SusWrite 94.8 135
38.9% 179 MB/s
Min Avg Max
14 4K Read 23.3 29.7
18.3 4K Write 46.3 90.7
5.37 4K Mixed 12.3 21.8
75.6% 27.3 MB/s
Min Avg Max
26.1 DQ Read 254 365
24.7 DQ Write 84.5 139
9.6 DQ Mixed 33.3 63.8
60.1% 124 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
8GB free (System drive)
Firmware: EXT4
SusWrite @10s intervals: 64 66 41 51 37 34 MB/s
52.1% Above average
Read 448
Write 78.4
Mixed 109
SusWrite 48.7
37% 171 MB/s
4K Read 20.1
4K Write 35.8
4K Mixed 16.9
71% 24.3 MB/s
DQ Read 369
DQ Write 69.5
DQ Mixed 56
83% 165 MB/s
35GB free (System drive)
Firmware: EXT4
SusWrite @10s intervals: 53 60 70 57 97 105 MB/s
50.2% Above average
Read 320
Write 37.9
Mixed 72.2
SusWrite 73.5
27% 126 MB/s
4K Read 32.1
4K Write 29.9
4K Mixed 24.7
96% 28.9 MB/s
DQ Read 118
DQ Write 43.7
DQ Mixed 33.7
37% 65.2 MB/s
22GB free (System drive)
Firmware: EXT4
SusWrite @10s intervals: 40 25 28 23 25 19 MB/s
42.4% Average
Read 437
Write 56.5
Mixed 77.5
SusWrite 26.6
32% 149 MB/s
4K Read 23.4
4K Write 31.5
4K Mixed 13.1
69% 22.7 MB/s
DQ Read 78.6
DQ Write 55.4
DQ Mixed 35
35% 56.3 MB/s
3GB free (System drive)
Firmware: EXT4
SusWrite @10s intervals: 39 43 59 106 117 105 MB/s
31.3% Below average
Read 423
Write 18
Mixed 28.9
SusWrite 78.2
29% 137 MB/s
4K Read 20.8
4K Write 4.5
4K Mixed 1.4
36% 8.9 MB/s
9GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 20 17 19 18 18 19 MB/s
26.1% Poor
Read 298
Write 24.5
Mixed 32.5
SusWrite 18.6
20% 93.4 MB/s
4K Read 5.3
4K Write 21.1
4K Mixed 7.2
28% 11.2 MB/s
DQ Read 173
DQ Write 25.8
DQ Mixed 19.8
35% 72.9 MB/s
113 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,658,713 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 51%, 113 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.

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) 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]

ADVERTISEMENT

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

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 9 years

Speed Comparisons

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 860 Evo 250GB
vs Samsung 870 Evo 250GB
vs Samsung 850 Pro 512GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
vs Crucial MX300 275GB
vs Samsung 850 Evo 1TB

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 $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia 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) $35Corsair 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
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback