Home Phone comparison Xiaomi 12X and Oppo Reno 15 Pro Max - Which is better?

Xiaomi 12X vs Oppo Reno 15 Pro Max

63 out 100
Xiaomi 12X
VS
81 out 100
Oppo Reno 15 Pro Max
Xiaomi 12X
Oppo Reno 15 Pro Max

Compared 2 smartphones : Xiaomi 12X Manufactured in December, 2021, with display 6.28 with chipsetQualcomm Snapdragon 870, vs Oppo Reno 15 Pro Max, Manufactured in January, 2026 with chipsetMediaTek Dimensity 8450. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Xiaomi 12X
  • Lighter design: 176g vs 205g
  • Supports Dolby Atmos
Reasons to choose Oppo Reno 15 Pro Max
  • Larger display: 6.78in
  • Higher pixel density: 450ppi
  • Higher battery capacity: 6500mAh vs 4500mAh
  • Newer Bluetooth version: 5.4 vs 5.1
  • Built-in eSIM

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
- 12/256 GB		 - 12/256 GB
- 12/512 GB

Review

Key Specs Xiaomi 12X and Oppo Reno 15 Pro Max
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi 12X
vs
Oppo Reno 15 Pro Max

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.28 in 6.78 in
Resolution 1080x2400 pixels 1272x2772 pixels
Aspect ratio 20:9 19.5:9
Pixel density 419 ppi 450 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes Yes (1-120 Hz)
Max brightness 500 nits 1800 nits
HDR support Yes HDR10+ Yes, HDR10+
Touch Sampling Rate 480 Hz 240 Hz
Screen-to-body ratio 89.3 % 91.6 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi 12X
924 nits
Oppo Reno 15 Pro Max
n/a
sRGB gamut98.6 %n/a
PWM (Flicker)523 Hzn/a
Response time1 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Xiaomi 12X]

Design & Build

Design and ergonomics comparison
Height 152.7 mm (6.01 in) 161.26 mm (6.35 in)
Width 69.9 mm (2.75 in) 76.46 mm (3.01 in)
Thickness 8.16 mm (0.32 in) 7.65 mm (0.3 in)
Weight 176 g (6.21 oz) 205 g (7.23 oz)
Water resistance No IP69
Cooling system n/a Vapor chamber
Back panel Glass Glass
Frame Metal Metal
Colors - Black
- Blue
- Pink		 - Gold
- Brown
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Xiaomi 12X
89.3 %
Oppo Reno 15 Pro Max
91.6 %

Performance

Testing Xiaomi 12X and Oppo Reno 15 Pro Max In benchmarks
Processor
Chipset Qualcomm Snapdragon 870 MediaTek Dimensity 8450
Max Frequency 3200 MHz 3250 MHz
CPU Cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4/1.8 (Kryo 585 Silver (Cortex-A55))
- 3/2.42 (Kryo 585 Gold (Cortex-A77))
- 1/3.2 (Kryo 585 Prime (Cortex-A77))		 - 4/2.1 (Cortex-A725)
- 3/3 (Cortex-A725)
- 1/3.25 (Cortex-A725)
Process TSMC TSMC
Transistor Size 7 nm 4 nm
Neural Processor Hexagon 698 MediaTek NPU 880
Graphics Adreno 650 n/a
GPU Cores 768 n/a
GPU Frequency 670 MHz n/a
FLOPS 1029.1 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 12X
1297
Oppo Reno 15 Pro Max
1608
Geekbench 6 (Multi-Core)
Xiaomi 12X
3428
Oppo Reno 15 Pro Max
6321
Geekbench 6 (Single-Core)12971608
Geekbench 6 (Multi-Core)34286321
Sources: Geekbench v6 [Xiaomi 12X], [Oppo Reno 15 Pro Max]
AnTuTu 10
AnTuTu 10
Xiaomi 12X
806389
Oppo Reno 15 Pro Max
2131620
CPU237508671568
GPU235693654429
Memory153330282208
UX179858523415
NanoReview Score8063892131620
3DMark Wild Life
3DMark Wild Life
Xiaomi 12X
4251
Oppo Reno 15 Pro Max
n/a
Max Surface Temp.37.6 °Cn/a
Stability98 %n/a
Graphics Test25 fpsn/a
Graphics Score4251n/a
Sources: 3DMark [Xiaomi 12X]

Memory

RAM
RAM Size - 8 GB
- 12 GB		 12 GB
Memory Type LPDDR5 LPDDR5X
Memory Frequency n/a 4266 MHz
Channels 2 4
Storage
Storage Capacity- 128 GB
- 256 GB		256 GB
Storage TypeUFS 3.1UFS 3.1
Memory CardNoNo

Software

OS Android 11 (Upgradeable to Android 13) Android 16
OS Size 29.3 GB n/a
UI Skin HyperOS 1.0 ColorOS 16

Battery

Volume 4500 mAh 6500 mAh
Max Charging Power 67 W 80 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging No Yes (50 W)
Reverse Charging No Yes
Fast Charging Yes (78% in 30 min) Yes (70% in 30 min)
Full Charge Time 0:48 h 0:58 h
Battery Life Test
Battery Life
Xiaomi 12X
22:44
Oppo Reno 15 Pro Max
n/a
Web Browsing09:35 hn/a
Video Playback14:39 hn/a
Games05:35 hn/a
Standby Mode101 hn/a

Main camera

Matrix 50 MP 200 MP
Photo resolution 8700x5800 pixels n/a
Zoom Digital Optical, 3.5x
Flash Dual LED LED
Stabilization Optical Optical
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 960 fps (720p)
Wide-angle lens 123 ° 100 °
Lenses count Standard: 50 MP
Ultra-wide: 13 MP
Macro: 5 MP		 Standard: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP200 MP
Aperturef/1.9f/1.8
Focal length26 mm24 mm
SensorSony IMX766Samsung ISOCELL HP5
Sensor size1/1.561/1.56 (0.64)
Pixel size1 μm0.5 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalOptical
Telephoto
Matrixn/a50 MP
Aperturen/af/2.8
Focal lengthn/a85 mm
Stabilizationn/aOptical
Ultra-wide lens
Matrix13 MP50 MP
Aperturef/2.4f/2.0
Focal length12 mm16 mm
SensorOmniVision OV13B10n/a
Sensor size1/3.06n/a
Pixel size1.12 μmn/a
StabilizationDigitalDigital

Front camera

Matrix 32 MP 50 MP
Photo resolution 6528x4896 pixels 8192x6144 pixels
Aperture f/2.4 f/2.0
Focal length 26 mm 18 mm
Sensor OmniVision OV32B40 n/a
Sensor size 1/3 n/a
Pixel size 0.7 μm n/a
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 60 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.1 5.4
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Varies by region Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *n/aYes
Hybrid SlotNoNo
2G BandsGSM 850 900 1800 1900 MHzGSM 850/900/1800/1900MHz
3G BandsWCDMA B1/2/4/5/6/8/19WCDMA 1/2/4/5/6/8/19
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes No
Speaker Test
Max Volume
Xiaomi 12X
90.1 dB
Oppo Reno 15 Pro Max
n/a

Other

Class Flagship Flagship
Announced December, 2021 yr January, 2026 yr
Release Date December, 2021 yr January, 2026 yr
Launch Price ($) 650 n/a
MSRP ($) n/a 800
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 67 W Yes, 80 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Oppo Reno 15 Pro Max the clear winner in this comparison.

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