OnePlus 9 Pro vs Asus ROG Phone 8 Pro - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date March 30, 2021 January 18, 2024
Release Year 2021 2024

Physical

Volume 104.5 cm³ 111.96 cm³
Screen Size to Weight Ratio 3.4 "/g 3.01 "/g
Weight 197 g 225 g
Height 163.2 mm 163.8 mm
Width 73.6 mm 76.8 mm
Thickness 8.7 mm 8.9 mm
Foldable Design No No
Available Colors
  • Forest Green
  • Morning Mist
  • Stellar Black
  • Phantom Black

Display

Screen Size 6.7 " 6.78 "
Resolution 1440 x 3216 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.9 % 88.2 %
Pixel Density 525 PPI 388 PPI
Refresh Rate 120 Hz 165 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 1600 nits
Peak Brightness 1300 nits 2500 nits

Hardware

Battery Capacity per Screen Area 100.25 mAh/in² 119.65 mAh/in²
Battery Density 43.06 mAh/cm³ 49.12 mAh/cm³
Battery Capacity 4500 mAh 5500 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55 Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)
GPU Adreno 660 Adreno 750

Connectivity

USB Version 3.1 N/A
OTG Support 1 1
DisplayPort 1
DisplayPort Version N/A 1.4
USB Features USB Type-C 3.1, OTG USB Type-C, OTG, DisplayPort 1.4, Bottom Port

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 14 16

Comparison Summary

1. Specifications Comparison

FeatureOnePlus 9 ProAsus ROG Phone 8 ProPractical Impact
Design
Launch Date2021-03-302024-01-18Asus is significantly newer, with newer tech and software.
Dimensions163.2 × 73.6 × 8.7 mm163.8 × 76.8 × 8.9 mmAsus is slightly larger and thicker, potentially less comfortable for small hands.
Weight197g225gOnePlus is lighter, more comfortable for extended holding.
Display
Size6.7"6.78"Negligible difference, both offer a large viewing area.
Resolution1440x32161080x2400OnePlus has sharper text and images, better for detailed content.
PPI525388OnePlus offers a noticeably sharper display due to higher pixel density.
TechnologyAMOLEDAsus has superior color accuracy, contrast and efficiency.
Refresh Rate120Hz165HzAsus provides smoother animations, crucial for gaming and fast scrolling.
Brightness1300 nits2500 nitsAsus has much better visibility in bright sunlight.
Performance
ChipsetSnapdragon 888 5G (5 nm)Snapdragon 8 Gen 3 (4 nm)Asus offers significantly faster processing, better for demanding tasks.
AnTuTu Score877,6002,020,000Asus delivers a substantially higher benchmark score, meaning a smoother experience for gaming, apps and multitasking.
GPUAdreno 660Adreno 750Asus has a more powerful GPU, leading to better graphics performance, particularly in gaming.
Battery
Capacity4500mAh5500mAhAsus has longer battery life, although actual usage depends on factors such as screen brightness and what is being used on the phone.
Charging65W Fast Charging65W Fast ChargingBoth phones can be charged quickly.
FeaturesReverse charging, Wireless charging 50W, REverse wireless chargingNon-removableOnePlus can act as a wireless power bank for other devices.
Camera
Standard Camera48MP, f/1.8, 1/1.43"50MP, f/1.9, 1/1.56"Similar main cameras; OnePlus has a larger sensor with slightly wider aperture.
Selfie Camera16MP, 1/3.13"32MP, 1/3.2"Asus has higher resolution for more detailed selfies.
Telephoto Lens8MP, f/2.4, 1/4.4"32MP, f/2.4, 1/3.2"Asus has higher zoom capabilities with more detail.
Wide Angle Lens50MP, f/2.2, 1/1.56"N/AOnePlus has a dedicated ultra-wide camera.
Wide Angle + MacroN/A13MP, f/2.2, 1/3"Asus has a dedicated wide-angle camera that also handles macro shots.
Black & White2MP, f/2.4N/AOnePlus has a dedicated B&W lens for artistic shots.
VideoUp to 8K@120fps with HDR, EISUp to 8K@24fps with HDR, EISSimilar video quality; OnePlus supports higher frame rates.
DXOMark ScoreMain: 122, Photo: 124, Video: 118N/AOnePlus camera performance is objectively rated better
Camera FeaturesQuadruple camera, Ultra stable video, PDAF, CDAF, RAW, RAW 12 bitsTriple camera, GimbalBoth offer stabilization and advanced features.
Software
OSAndroid 11 (up to 14)Android 14 (up to 16)Asus has newer software with more recent updates and features.
Connectivity
WiFiWiFi 6WiFi 7Asus has faster and more stable connections.
Bluetooth5.25.3Asus has a newer version with slightly better efficiency.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoA-GPS, GLONASS, Beidou, QZSS, NavICAsus has more satellite systems, better for precise location tracking.
SIMDual Nano SIMDual Nano SIMBoth support dual SIMs.
Storage
Internal Storage128GB/256GB512GB/1024GBAsus offers significantly more internal storage.
RAM8GB/12GB16GB/24GBAsus has a larger RAM capacity, beneficial for multitasking.
Expandable StorageNoNoNeither phone supports microSD cards.
Audio
Audio QualityDolby Atmos, Noise cancellation microphoneDTS / DTS XSlight edge to OnePlus with Dolby Atmos.
Security
Fingerprint SensorBasic Fingerprint SensorBasic Fingerprint SensorBoth offer basic fingerprint sensors for security.
Build Quality
Screen ProtectionCorning Gorilla Glass 5Corning Gorilla Glass Victus 2Asus has better screen protection from scratches and drops.
Sensors
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeFingerprint, Proximity, Accelerometer, Compass, GyroscopeBoth have comprehensive sensor suites.

2. Key Differences Analysis

OnePlus 9 Pro Advantages:

  • Sharper Display: Higher resolution (1440x3216) and pixel density (525 PPI) resulting in crisper images and text.
  • Camera Versatility: A dedicated wide-angle camera and a dedicated B&W lens, offering more flexibility for creative photography.
  • Wireless Charging & Reverse Wireless Charging: Ability to charge wirelessly and act as a wireless power bank, great for convenience.
  • Slightly Lighter: More comfortable to hold for extended periods.
  • Objectively Better Camera Performance: Has a DXOMark camera score indicating better camera performance for pictures and video.

Asus ROG Phone 8 Pro Advantages:

  • Superior Performance: Significantly faster Snapdragon 8 Gen 3 chipset for smoother gaming and multitasking, confirmed by much higher AnTuTu score.
  • Smoother Display: Higher refresh rate of 165Hz offering fluid visuals, particularly beneficial for gamers.
  • Brighter Display: Much higher brightness (2500 nits) for excellent outdoor visibility.
  • Longer Battery Life: Larger 5500 mAh battery for extended usage.
  • Better Screen Protection: More durable Gorilla Glass Victus 2 screen protection.
  • More Internal Storage: Up to 1 TB of storage, suitable for users who store a lot of content.
  • Better Connectivity: Supports Wi-Fi 7 and Bluetooth 5.3 for the latest in wireless technology.
  • Better GPS: More satellite support, especially useful in areas with poor signal.
  • Better Selfie and Telephoto: Significantly improved sensor on front and telephoto lens compared to the OnePlus.
  • More RAM: Up to 24GB of RAM, a plus for heavy multitasking.
  • Newer Software: Shipped with Android 14 (up to 16), offering access to recent software features

Significant Trade-offs:

  • OnePlus 9 Pro: Slightly older technology and lower performance compared to ROG Phone 8 Pro.
  • Asus ROG Phone 8 Pro: Larger and heavier, and not as good camera versatility, less sharp display.

3. User Profiles & Recommendations

OnePlus 9 Pro:

  • Ideal User: Users who value a premium display with great color accuracy, a good camera, and are not heavy gamers or power users.
  • Use Cases:
    • General daily use, web browsing, social media
    • Photography enthusiasts seeking varied camera options
    • Users who value wireless charging and reverse wireless charging for added convenience.
    • Users who prefer a lighter, more comfortable phone for one-handed usage

Asus ROG Phone 8 Pro:

  • Ideal User: Gamers, power users, and anyone who prioritizes performance, responsiveness and battery life above all else.
  • Use Cases:
    • High-end gaming with demanding graphics
    • Multitasking between resource-intensive applications
    • Outdoor use in bright sunlight
    • Users who want the latest connectivity and location technology.
    • Users who need a large amount of internal storage.

4. Decision Framework

Key Questions:

  1. How important is gaming and overall performance? If gaming and performance are your priority, the Asus ROG Phone 8 Pro is the clear choice.
  2. Do you prefer a sharper display, or a brighter and smoother one? If display sharpness is your preference the OnePlus wins, but the Asus has a brighter screen with a higher refresh rate.
  3. How important is wireless charging and reverse wireless charging? The OnePlus 9 Pro offers these features while the Asus ROG Phone 8 Pro doesn't have wireless charging of any kind.

Scenario-Based Recommendations:

  • Casual User: If you are a casual user who values a good balance of features, a solid camera, and comfort, the OnePlus 9 Pro remains a viable option.
  • Heavy User: If you are a heavy user who wants the best performance, long battery life and do a lot of gaming and demanding tasks, the Asus ROG Phone 8 Pro is the superior choice.
  • Photography Focus: If versatile camera capabilities, especially with the dedicated wide and black/white cameras, are most important, the OnePlus 9 Pro would be a good option, even though the sensors aren't as good. If you want a much better zoom and selfie camera, the Asus is the better option.
  • Outdoor User: If you are someone who frequently uses their phone in outdoor, bright conditions, the Asus is better.

My Choice

I would choose the Asus ROG Phone 8 Pro. Although I appreciate the sharper display and some additional camera features of the OnePlus 9 Pro, the Asus ROG Phone 8 Pro's superior performance, significantly brighter screen, higher refresh rate, larger battery and newer software, and the fact that it is more future proof are more important to me. The newer processor and better graphics would make the experience far smoother for demanding apps and future games, and the additional battery capacity means I don't have to worry about running out of power so quickly. Although the OnePlus 9 Pro has a more versatile camera, the Asus ROG Phone 8 Pro offers more detail from the selfie and telephoto cameras which is more important for my use cases. The additional storage and RAM are a great bonus as well. While it might be a bit bulkier, I am willing to trade that for the performance gains it offers.

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.