Xiaomi 12 vs Asus ROG Phone 8 - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 12
Xiaomi 12
Xiaomi

General

Launch Date December 31, 2021 January 18, 2024
Release Year 2021 2024

Physical

Volume 87.52 cm³ 111.96 cm³
Screen Size to Weight Ratio 3.51 "/g 3.01 "/g
Weight 179 g 225 g
Height 152.7 mm 163.8 mm
Width 69.9 mm 76.8 mm
Thickness 8.2 mm 8.9 mm
Foldable Design No No
Available Colors
  • Blue
  • Green
  • Purple
  • Gray
  • Phantom Black
  • Rebel Grey

Display

Screen Size 6.28 " 6.78 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.2 % 88.2 %
Pixel Density 419 PPI 388 PPI
Refresh Rate 120 Hz 165 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 1600 nits
Peak Brightness 1100 nits 2500 nits

Hardware

Battery Capacity per Screen Area 114.10 mAh/in² 119.65 mAh/in²
Battery Density 51.41 mAh/cm³ 49.12 mAh/cm³
Battery Capacity 4500 mAh 5500 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm) Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
CPU Octa-core (1x3.00 GHz Cortex-X2 & 3x2.50 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)
GPU Adreno 730 Adreno 750

Connectivity

USB Version 2.0 N/A
OTG Support 1 1
DisplayPort 1
DisplayPort Version N/A 1.4
USB Features USB Type-C 2.0, OTG USB Type-C, OTG, DisplayPort 1.4, Bottom Port

Software

Operating System Android Android
Initial OS Version 12 14
Maximum OS Version 16

Comparison Summary

Alright, let's dive deep into a head-to-head comparison between the Xiaomi 12 and the Asus ROG Phone 8. We're not just going to throw specs at you; we're going to dissect what these numbers mean for your everyday life. Buckle up, tech enthusiasts, it's going to be a detailed ride.

1. Specifications Breakdown

Here's a comprehensive table that lays out the key technical differences between the Xiaomi 12 and the Asus ROG Phone 8, along with real-world implications:

FeatureXiaomi 12Asus ROG Phone 8Real-World Implications
Design
Size152.7 × 69.9 × 8.2 mm163.8 × 76.8 × 8.9 mmROG Phone 8 is larger, which can be better for media consumption but less pocketable
Weight179g225gXiaomi 12 is significantly lighter, more comfortable for one-handed use and prolonged periods.
Display
Size6.28"6.78"ROG Phone 8 offers a more immersive experience for gaming, movies, and multi-tasking.
Resolution1080x24001080x2400Both deliver sharp visuals; no significant difference here.
Pixel Density419 ppi388 ppiXiaomi 12 has slightly sharper text and details due to higher pixel density, though the difference is subtle to the naked eye
TechnologyAMOLEDAMOLEDBoth provide vibrant colors and deep blacks characteristic of AMOLED displays.
Refresh Rate120Hz165HzROG Phone 8 has noticeably smoother scrolling and gaming visuals.
Brightness1100 nits2500 nitsROG Phone 8 has significantly better outdoor visibility under bright sunlight.
Performance
ChipsetSnapdragon 8 Gen 1Snapdragon 8 Gen 3ROG Phone 8 offers far superior performance, especially in graphics-intensive tasks like gaming.
AnTuTu Score1,150,8312,020,000ROG Phone 8 is notably faster, offering quicker app loads, smoother multitasking, and better frame rates in games.
GPUAdreno 730Adreno 750ROG Phone 8 has better graphics performance, allowing for smoother and higher fidelity visuals in gaming and intensive apps.
Camera
Main Camera50MP, f/1.88, IMX76650MP, f/1.9, IMX890Both take good photos but Xiaomi has a wider aperture for low light while ROG has a newer sensor.
Selfie Camera32MP, 1/3.14" Samsung JD132MPBoth offer similar quality front-facing cameras for selfies and video calls.
Wide Angle Lens13MP, f/2.4NoneXiaomi 12 provides a dedicated wide-angle lens for capturing more expansive scenes.
Macro Lens5MP, f/2.45MP, f/2.4Both offer macro cameras for detailed close-up shots.
Wide Angle + MacroNone13MP f/2.2ROG Phone 8 combines Wide Angle and Macro into one, providing versatility and eliminating the need for switching lens
VideoUp to 8K@24fpsUp to 8K@24fpsBoth are capable of capturing high-resolution videos; similar video capabilities across most resolutions.
Additional Camera FeaturesUltra stable video, PDAF, RAWGimbal, Optical Zoom, Laser AutofocusROG offers advanced camera features. Xiaomi offers more detailed control over video & photography.
Battery
Capacity4500mAh5500mAhROG Phone 8 will likely have longer battery life, reducing the need to charge throughout the day.
Charging67W Fast Wired65W Fast WiredBoth have rapid charging. Xiaomi charges slightly faster despite smaller battery
Wireless Charging/Reverse Charging50W Wireless, 10W ReverseNoneXiaomi 12 has convenient wireless and reverse charging options for added flexibility.
Software
OSAndroid 12Android 14Asus has a more updated OS.
Connectivity
WiFiWiFi 6WiFi 7ROG Phone 8 supports the latest WiFi standard, offering faster speeds and more robust connections.
BluetoothBluetooth 5.2Bluetooth 5.3ROG Phone 8 has newer bluetooth version.
Storage
Internal Storage128GB/256GB256GBBoth offers ample storage for most users, however, neither phones can be expanded by SD Card
RAM8GB/12GB12GB/16GBROG Phone 8 offers more RAM, enabling smoother multitasking and better performance in resource-intensive apps.
ExpandableNoNoNeither supports expandable storage; important for users with large media collections.
Audio
QualityDolby Atmos, Hi-Res Audio, 2 microphonesDTS / DTS X, 3 microphonesBoth offer quality audio. Xiaomi offers advanced spatial audio and higher quality playback while ROG has better sound capturing.
Other
Screen ProtectionGG VictusGG Victus 2Both have very durable screens.
SensorsUltrasonic proximity virtual, RGBProximity, GravityXiaomi offers additional features and sensors

2. Key Insights

  • Xiaomi 12 Strengths:
    • Lighter and More Compact: Easier to handle and more pocket-friendly, which is great for daily use.
    • Fast Wireless Charging: A rare feature, and very useful for quickly topping up your phone.
    • Wider aperture on main camera: Captures more light, especially useful in low light conditions.
    • More additional sensors: Offers more advanced features with ultrasonic proximity, and RGB sensors.
  • Asus ROG Phone 8 Strengths:

    • Superior Performance: The Snapdragon 8 Gen 3 chipset blows the Xiaomi 12 out of the water, making it ideal for gamers and power users.
    • Larger and Smoother Display: Immersive 6.78" screen with a super smooth 165Hz refresh rate for a top-tier viewing experience.
    • Much Brighter Display: Excellent outdoor visibility under bright sunlight, making it easy to use anywhere.
    • Larger Battery: The 5500mAh battery provides much better battery life, meaning less time looking for a power outlet.
    • Advanced Camera Features: The inclusion of Gimbal OIS and a laser autofocus add versatility to the camera capabilities.
    • Latest WiFi and Bluetooth: Enjoy the latest connectivity standards for faster speeds and better performance.
  • Trade-offs and Limitations:

    • Xiaomi 12: The older chipset will show its age when faced with intensive tasks compared to newer devices. Lack of expandable storage might be a drawback for some.
    • Asus ROG Phone 8: It's heavier and larger, making it less comfortable for some users. No wireless or reverse charging are not a deal breaker but are missed in this price range.

3. User Profiles and Recommendations

  • Xiaomi 12:
    • Ideal for: Users who value a compact, lightweight phone with fast wireless charging. Suitable for everyday tasks, social media, and casual gaming.
    • Best Use Cases: Daily commuters, users who prefer one-handed operation, and those who want a good all-rounder without breaking the bank.
  • Asus ROG Phone 8:
    • Ideal for: Hardcore gamers, power users, and anyone who prioritizes performance above all else.
    • Best Use Cases: Mobile gamers who need the best refresh rate and responsiveness, video and photo enthusiasts wanting top-tier recording features, and power users doing intensive work on the go.

4. Buying Decision Framework

Here are three questions to help you decide:

  1. Do you prioritize compact design and convenience, or cutting-edge performance?

    • If compact and lightweight is key, and you prioritize wireless charging, choose the Xiaomi 12.
    • If raw power and cutting-edge performance are crucial, go for the Asus ROG Phone 8.
  2. Is gaming or heavy app usage a major part of your smartphone usage?

    • If casual use and moderate gaming, the Xiaomi 12 will likely be sufficient.
    • If intensive gaming or heavy multitasking are important, the Asus ROG Phone 8 is the clear winner.
  3. Do you need the latest connectivity and camera features?

    • If you don't mind missing out on the latest connectivity and more advanced camera features, the Xiaomi 12 does not disappoint.
    • If you are after the latest connectivity standards and more versatile camera features, the Asus ROG Phone 8 is the way to go.

Scenario-Based Recommendations:

  • The Casual User: If you mostly browse, text, and stream videos, the Xiaomi 12 offers a great experience in a more convenient package.
  • The Mobile Gamer: The Asus ROG Phone 8 is tailored for you, offering unmatched performance, a high refresh rate screen, and a robust cooling system.
  • The Power User: If you edit photos/videos or frequently juggle between apps, the ROG Phone 8’s superior performance is a must.

My Choice

If I were choosing, I would personally go for the Asus ROG Phone 8. As someone who appreciates a smooth and immersive display, the 165Hz refresh rate coupled with the extremely bright display is a major draw. The performance upgrade from the Snapdragon 8 Gen 3 is also significant and future-proofs the device for years to come. While I do value the compact form and wireless charging of the Xiaomi 12, my use case often involves gaming, video editing, and content creation which benefit more from the ROG Phone 8's powerhouse internals. The larger display is also an advantage for multitasking and media consumption, and while the size is a bit more bulky, the trade-off is worth it for the performance and visual fidelity it offers.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.