Oppo Reno6 5G vs Xiaomi 12X - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 12X
Xiaomi 12X
Xiaomi

General

Launch Date June 11, 2021 December 31, 2021
Release Year 2021 2021

Physical

Volume 85.92 cm³ 87.52 cm³
Screen Size to Weight Ratio 3.53 "/g 3.57 "/g
Weight 182 g 176 g
Height 156.8 mm 152.7 mm
Width 72.1 mm 69.9 mm
Thickness 7.6 mm 8.2 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Blue
  • Purple
  • Gray

Display

Screen Size 6.43 " 6.28 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.3 % 89.2 %
Pixel Density 409 PPI 419 PPI
Refresh Rate 90 Hz 120 Hz
Typical Brightness 430 nits N/A
HBM Brightness 600 nits N/A
Peak Brightness 750 nits 1100 nits

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 114.10 mAh/in²
Battery Density 50.05 mAh/cm³ 51.41 mAh/cm³
Battery Capacity 4300 mAh 4500 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 900 (6 nm) Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
GPU Mali-G68 MC4 Adreno 650

Connectivity

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

Software

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

Comparison Summary

Oppo Reno6 5G vs. Xiaomi 12X: A Practical Face-Off

Two capable mid-range phones with distinct strengths—one excels in camera versatility, the other in performance and display smoothness. Here’s how they compare in real-world use.


1. Specifications Breakdown

Design & Build

FeatureOppo Reno6 5GXiaomi 12XReal-World Implications
Dimensions156.8 × 72.1 × 7.6 mm152.7 × 69.9 × 8.2 mmXiaomi is more compact, Oppo slightly slimmer.
Weight182g176gXiaomi feels lighter in hand.
Screen ProtectionGorilla Glass 5Gorilla Glass VictusXiaomi has superior drop/scratch resistance.

Key Insight: The Xiaomi 12X is better for pocketability and durability, while the Oppo has a marginally sleeker profile.


Display

FeatureOppo Reno6 5GXiaomi 12XReal-World Implications
Size6.43" AMOLED6.28" AMOLEDOppo offers slightly more screen real estate.
Refresh Rate90Hz120HzXiaomi feels smoother in scrolling/gaming.
Brightness1100 nits1100 nitsBoth excellent for outdoor visibility.

Key Insight: If fluidity matters (gaming, UI navigation), Xiaomi’s 120Hz display wins. Oppo’s larger screen benefits media consumption.


Performance

FeatureOppo Reno6 5GXiaomi 12XReal-World Implications
ChipsetDimensity 900 (6nm)Snapdragon 870 5G (7nm)Snapdragon 870 is more refined for gaming.
Antutu Score~815K~815KNear-identical synthetic performance.
GPUMali-G68 MC4Adreno 650Adreno 650 better optimized for games.

Key Insight: Despite similar benchmark scores, Xiaomi’s Snapdragon chip offers better real-world stability and game support.


Camera

FeatureOppo Reno6 5GXiaomi 12XReal-World Implications
Main Camera50MP (f/1.8, Sony IMX766)50MP (f/1.88, Sony IMX766)Oppo’s wider aperture helps in low light.
Ultrawide16MP (f/2.2)13MP (f/2.4)Oppo’s ultrawide is sharper.
Telephoto13MP (2x zoom)NoneOppo has an edge for zoom shots.
Selfie32MP (f/2.4, larger sensor)32MP (f/2.45, smaller sensor)Oppo captures more detail.
Video4K@60fps8K@24fps, better stabilizationXiaomi wins for videography.

Key Insight: Oppo is the better all-round camera phone (zoom, ultrawide, selfies), while Xiaomi excels in video recording.


Battery & Charging

FeatureOppo Reno6 5GXiaomi 12XReal-World Implications
Capacity4500mAh4500mAhSimilar endurance.
Charging65W67WBoth charge fully in ~30-40 mins.
AudioBasicDolby Atmos, Stereo SpeakersXiaomi’s audio is far superior.

Key Insight: Battery life is a tie, but Xiaomi offers a better multimedia experience with superior speakers.


2. Key Insights & Trade-Offs

Oppo Reno6 5G Strengths

Better camera versatility (telephoto, ultrawide, selfies)
Larger display (better for videos/multitasking)
Slightly slimmer build

Xiaomi 12X Strengths

Smoother 120Hz display (better for gaming/UI)
Superior video recording (8K, better stabilization)
Stronger chipset (Snapdragon 870 more reliable long-term)
Better speakers & audio (Dolby Atmos, stereo)

Trade-Offs

  • Oppo lacks the fluid 120Hz screen and premium audio of the Xiaomi.
  • Xiaomi lacks a telephoto lens, which limits zoom capabilities.

3. Who Should Buy Which Phone?

Choose the Oppo Reno6 5G if you:

  • Prioritize camera versatility (zoom, ultrawide, selfies).
  • Prefer a larger screen for media consumption.
  • Don’t care about high refresh rates or top-tier speakers.

Choose the Xiaomi 12X if you:

  • Want smoother performance (120Hz, Snapdragon 870).
  • Need better video recording (8K, stabilization).
  • Value premium audio (Dolby Atmos, stereo speakers).

4. Buying Decision Framework

Ask yourself:

  1. Do I care more about camera flexibility or display smoothness?
    • Oppo for cameras, Xiaomi for fluidity.
  2. Is video recording important to me?
    • Xiaomi’s 8K and stabilization win.
  3. Do I prioritize speakers and multimedia?
    • Xiaomi’s Dolby Atmos and stereo setup are superior.

Scenario-Based Recommendations

  • Gamer/Media Consumer?Xiaomi 12X (120Hz, better chipset, speakers).
  • Photography Enthusiast?Oppo Reno6 5G (telephoto, better selfies).

Final Verdict: Which Would I Choose?

I’d pick the Xiaomi 12X.
The 120Hz display, Snapdragon 870, and superior audio make it the better all-rounder for long-term use. While the Oppo has a slight camera advantage, Xiaomi’s 8K video, smoother UI, and gaming performance tip the scales. If cameras are your absolute priority, the Reno6 5G is a strong alternative—but for most users, the Xiaomi 12X delivers a more balanced experience.

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.