OnePlus 8 vs Motorola Moto G51 5G - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 8
OnePlus 8
Oneplus

General

Launch Date April 21, 2020 December 16, 2021
Release Year 2020 2021

Physical

Volume 93.43 cm³ 118.69 cm³
Screen Size to Weight Ratio 3.64 "/g 3.27 "/g
Weight 180 g 208 g
Height 160.2 mm 170.5 mm
Width 72.9 mm 76.5 mm
Thickness 8 mm 9.1 mm
Foldable Design No No
Available Colors
  • Glacial Green
  • Onyx Black
  • Interstellar Glow
  • Polar Silver
  • Indigo Blue
  • Bright Silver
  • Aqua Blue

Display

Screen Size 6.55 " 6.8 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.7 % 85.6 %
Pixel Density 402 PPI 387 PPI
Refresh Rate 90 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 100.23 mAh/in² 108.13 mAh/in²
Battery Density 46.02 mAh/cm³ 42.13 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250 Snapdragon 865 5G (7 nm+) Qualcomm SM4350-AC Snapdragon 480+ 5G (8 nm)
CPU Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) Octa-core (2x2.2 GHz Kryo 460 & 6x1.8 GHz Kryo 460)
GPU Adreno 650 Adreno 619

Connectivity

USB Version 3.1 2.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.1, OTG USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 13 12

Comparison Summary

1. Specifications Comparison

FeatureOnePlus 8Motorola Moto G51 5GPractical Impact
Design
Dimensions160.2 x 72.9 x 8 mm, 180g170.5 x 76.5 x 9.1 mm, 208gThe OnePlus 8 is significantly smaller and lighter, making it more pocketable and comfortable for one-handed use. The Moto G51 5G is larger and heavier.
Build QualityCorning Gorilla Glass 5Unknown screen protectionThe OnePlus 8 offers better screen protection against scratches and drops. The lack of information on the Moto G51 5G's screen protection is concerning.
Display
Size6.55"6.8"The Moto G51 5G offers a slightly larger screen for media consumption, but the difference is minimal.
Resolution1080 x 24001080 x 2400Both displays have the same sharp resolution.
TechnologyAMOLEDIPS LCDThe OnePlus 8's AMOLED display provides richer colors, deeper blacks, and better power efficiency, especially with dark themes.
Refresh Rate90Hz120HzThe Moto G51 5G's 120Hz refresh rate delivers smoother scrolling and animations.
Brightness1100 nits0 nits (Data Missing)The OnePlus 8's high brightness ensures excellent outdoor visibility. The missing brightness data for the Moto G51 5G makes comparison impossible.
Performance
ChipsetSnapdragon 865 5GSnapdragon 480+ 5GThe OnePlus 8's Snapdragon 865 significantly outperforms the Moto G51 5G's Snapdragon 480+, resulting in much faster app loading, smoother multitasking, and better gaming performance.
RAM8GB/12GB4GB/8GBThe OnePlus 8 offers more RAM, enabling better multitasking and handling of demanding applications.
Storage128GB/256GB64GB/128GBThe OnePlus 8 offers more storage options for storing photos, videos, and apps.
Camera
Main Camera48MP, f/1.75, Sony IMX58650MP, f/1.8, Samsung S5KJN1While the Moto G51 5G has a slightly higher resolution, the OnePlus 8 has a larger sensor and wider aperture, potentially capturing better low-light photos.
VideoUp to 4K@60fpsUp to 1080p@60fpsThe OnePlus 8 can record higher resolution videos.
Battery
Capacity4300 mAh5000 mAhThe Moto G51 5G has a larger battery capacity, potentially lasting longer on a single charge.
Charging30W fast charging10W fast chargingThe OnePlus 8 charges significantly faster.

2. Key Differences Analysis

OnePlus 8 Advantages:

  • Significantly better performance: The Snapdragon 865 and higher RAM provide a vastly superior user experience for demanding tasks and gaming.
  • Superior display: The AMOLED screen offers vibrant colors and deeper blacks.
  • Faster charging: 30W fast charging significantly reduces downtime.
  • Higher resolution video recording: Captures more detailed videos.
  • Premium build: Smaller, lighter, with Gorilla Glass protection.

Motorola Moto G51 5G Advantages:

  • Larger battery: Potentially longer battery life.
  • Higher refresh rate display (120Hz): Smoother scrolling and animations, although the benefit is somewhat negated by the less powerful processor.
  • Lower price point (assumed): Likely more budget-friendly.

3. User Profiles & Recommendations

OnePlus 8: Users who prioritize performance, a high-quality display, fast charging, and a premium feel. Ideal for:

  • Power users: Demanding apps, multitasking, gaming.
  • Content creators: High-quality video recording and photo editing.
  • Enthusiasts: Those who appreciate the latest technology and a premium experience.

Motorola Moto G51 5G: Users who prioritize battery life and affordability over raw performance. Ideal for:

  • Casual users: Basic web browsing, social media, light gaming.
  • Budget-conscious buyers: Seeking a functional phone without breaking the bank.

4. Decision Framework

Key Questions:

  1. What is your budget? The OnePlus 8 is likely more expensive.
  2. What are your primary use cases? Gaming, demanding apps, or basic tasks?
  3. Which features are most important to you? Performance, display quality, battery life, or camera?

Scenario-Based Recommendations:

  • Heavy user with a flexible budget: OnePlus 8
  • Casual user on a tight budget: Motorola Moto G51 5G
  • User who prioritizes battery life above all else: Motorola Moto G51 5G (assuming its missing brightness spec is decent)

My Choice: OnePlus 8

While the Motorola Moto G51 5G might offer a larger battery and a higher refresh rate display, the OnePlus 8's significantly superior performance, AMOLED display quality, faster charging, and more premium build are decisive factors for me. The Snapdragon 865 provides a vastly better user experience in the long run, making the OnePlus 8 a more future-proof choice. The missing brightness data for the Moto G51 5G is a significant concern as well. I prioritize a smooth and responsive experience, and the OnePlus 8 delivers that in spades. The better camera capabilities for video recording are also a significant plus. While the Moto G51 5G might be a good budget option, the OnePlus 8 offers a superior overall package.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

Key Strengths:

  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.