Home Phone comparison Oppo Find X8 Ultra and Xiaomi Redmi Note 15 4G - Which is better?

Oppo Find X8 Ultra vs Xiaomi Redmi Note 15 4G

93 out 100
Oppo Find X8 Ultra
VS
64 out 100
Xiaomi Redmi Note 15 4G
Oppo Find X8 Ultra
Xiaomi Redmi Note 15 4G

Compared 2 smartphones : Oppo Find X8 Ultra Manufactured in April, 2025, with display 6.82 with chipsetQualcomm Snapdragon 8 Elite, vs Xiaomi Redmi Note 15 4G, Manufactured in December, 2025 with chipsetMediaTek Helio G100 Ultra. 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 Oppo Find X8 Ultra
  • Larger display: 6.82in
  • Higher pixel density: 510ppi
  • Higher battery capacity: 6100mAh vs 6000mAh
  • Newer Bluetooth version: 5.4 vs 5.3
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Infrared port
  • Includes charger
Reasons to choose Xiaomi Redmi Note 15 4G
  • Lighter design: 183.7g vs 226g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/512 GB
- 16/1024 GB		 - 6/128 GB
- 8/128 GB
- 8/256 GB
- 8/512 GB

Review

Key Specs Oppo Find X8 Ultra and Xiaomi Redmi Note 15 4G
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:
Oppo Find X8 Ultra
vs
Redmi Note 15 4G

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.82 in 6.77 in
Resolution 1440x3168 pixels 1080x2340 pixels
Aspect ratio 20:9 n/a
Pixel density 510 ppi 388 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (60-120 Hz)
Max brightness 1600 nits n/a
HDR support Yes Dolby Vision No
Screen-to-body ratio 89.7 % 89.7 %
Features - DCI-P3
- Always-On Display
- DC dimming		 DCI-P3
Display test
Peak brightness (auto)
Oppo Find X8 Ultra
1168 nits
Xiaomi Redmi Note 15 4G
n/a

Design & Build

Design and ergonomics comparison
Height 163.09 mm (6.42 in) 164 mm (6.46 in)
Width 76.8 mm (3.02 in) 75.4 mm (2.97 in)
Thickness 8.78 mm (0.35 in) 7.4 mm (0.29 in)
Weight 226 g (7.97 oz) 183.7 g (6.48 oz)
Water resistance IP69 IP64
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Plastic
Colors - White
- Black
- Pink		 - Black
- Blue
- Green
- Purple
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Oppo Find X8 Ultra
89.7 %
Xiaomi Redmi Note 15 4G
89.7 %

Performance

Testing Oppo Find X8 Ultra and Xiaomi Redmi Note 15 4G In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite MediaTek Helio G100 Ultra
Max Frequency 4320 MHz 2200 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 6/2 (Cortex-A55)
- 2/2.2 (Cortex-A76)
Process TSMC TSMC
Transistor Size 3 nm 6 nm
Neural Processor Hexagon Yes
Graphics Adreno 830 Mali-G57 MP2
GPU Cores 1536 64
GPU Frequency 1100 MHz 1000 MHz
FLOPS 3379.2 GFLOPS 128 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Oppo Find X8 Ultra
3103
Xiaomi Redmi Note 15 4G
730
Geekbench 6 (Multi-Core)
Oppo Find X8 Ultra
9772
Xiaomi Redmi Note 15 4G
2025
Geekbench 6 (Single-Core)3103730
Geekbench 6 (Multi-Core)97722025
Geekbench Compute (GPU)25197n/a
Sources: Geekbench v6 [Oppo Find X8 Ultra]
AnTuTu 10
AnTuTu 10
Oppo Find X8 Ultra
2792179
Xiaomi Redmi Note 15 4G
437184
CPU628981132724
GPU121456572238
Memory507469109980
UX441164122242
NanoReview Score2792179437184

Memory

RAM
RAM Size - 12 GB
- 16 GB		 6 GB
Memory Type LPDDR5X LPDDR4X
Memory Frequency 5333 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 256 GB
- 512 GB
- 1024 GB		128 GB
Storage TypeUFS 4.0UFS 2.2
Memory CardNoNo

Software

OS Android 15 Android 15
UI Skin ColorOS 15 HyperOS 2.0

Battery

Volume 6100 mAh 6000 mAh
Max Charging Power 100 W 33 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (50 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (58% in 15 min) Yes
Full Charge Time 0:37 h n/a
Battery Life Test
Battery Life
Oppo Find X8 Ultra
25:30
Xiaomi Redmi Note 15 4G
n/a
Web Browsing11:48 hn/a
Video Playback15:21 hn/a
Games06:29 hn/a
Standby Mode109 hn/a

Main camera

Matrix 50 MP 108 MP
Photo resolution 8192x6144 pixels n/a
Zoom Optical, 6x Digital
Flash Dual LED LED
Stabilization Optical Digital
8K Recording No No
4K Recording Yes (Up to 120 fps) No
1080p Recording Yes (Up to 120 fps) Yes (Up to 30 fps)
Slow Motion 480 fps (720p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 50 MP
Telephoto: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP		 Standard: 108 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP108 MP
Aperturef/1.8f/1.7
Focal length23 mm24 mm
SensorSony LYT-900n/a
Sensor size1/01/1.67 (0.6)
Pixel size1.6 μm0.64 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalDigital
Telephoto
Matrix50 MPn/a
Aperturef/2.1n/a
Focal length70 mmn/a
SensorSony LYT-700Cn/a
Sensor size1/1.56n/a
Pixel size1 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix50 MPn/a
Aperturef/2.0n/a
Focal length15 mmn/a
SensorSamsung S5KJN5n/a
Sensor size1/2.75n/a
Pixel size0.64 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 32 MP 20 MP
Photo resolution 6560x4928 pixels n/a
Aperture f/2.4 f/2.2
Focal length 21 mm n/a
Sensor Sony IMX809 Omnivision OV02F
Sensor size 1/2.74 1/5 (0.2)
Pixel size 0.8 μm 1.75 μm
Autofocus Phase autofocus No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.4 5.3
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes No
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Varies by region
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850/900/1800MHzn/a
3G BandsWCDMA 1/4/5/8n/a
LTE Bands*LTE (B1/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66)n/a
5G SupportYesNo

Sound

3.5 mm Jack No No
FM Radio No Yes

Other

Class Flagship Mid-range
Announced April, 2025 yr December, 2025 yr
Release Date April, 2025 yr December, 2025 yr
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 100 W n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Oppo Find X8 Ultra the clear winner in this comparison.

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