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Xiaomi 15 Ultra vs Oppo Find X8 Ultra

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Xiaomi 15 Ultra vs Oppo Find X8 Ultra

95 out of 100
Xiaomi 15 Ultra
VS
94 out of 100
Oppo Find X8 Ultra
Xiaomi 15 Ultra
Oppo Find X8 Ultra

Here we compared two flagship smartphones: the 6.73-inch Xiaomi 15 Ultra (with Qualcomm Snapdragon 8 Elite) that was released on February 27, 2025, against the Oppo Find X8 Ultra, which is powered by the same chip and came out 2 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments (2)

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi 15 Ultra
  • Newer Bluetooth version (v6.0)
  • Slow-motion recording at 1920FPS
  • Faster storage type - UFS 4.1 versus UFS 4.0
  • Ready for eSIM technology
Reasons to consider the Oppo Find X8 Ultra
  • The rear camera has a 6x optical zoom
  • Waterproof body (IP69 classification)
  • 11% better performance in AnTuTu Benchmark (2792K versus 2505K)
  • Supports higher wattage charging (100W versus 90W)

Review

Evaluation of Xiaomi 15 Ultra and Oppo Find X8 Ultra crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
NanoReview Score
Final comparison evaluation
Choose the importance of each parameter to more accurately identify the smartphone that best meets your particular needs.

Tests and specifications

Comparison table of technical specifications and tests
Phone:
15 Ultra
vs
Find X8 Ultra

Display

TypeAMOLEDAMOLED
Size6.73 inches6.82 inches
Resolution1440 x 3200 pixels1440 x 3168 pixels
Aspect ratio20:920:9
PPI522 ppi510 ppi
Refresh rate120 Hz120 Hz
Adaptive refresh rateYes (1-120 Hz)Yes (1-120 Hz)
Max rated brightness - 1600 nits
Max rated brightness in HDR3200 nits2500 nits
HDR supportYes, Dolby VisionYes, Dolby Vision
Touch sampling rate300 Hz -
Screen protectionXiaomi Shield Glass 2.0Corning Gorilla Glass
Screen-to-body ratio90%89.7%
Display features - DCI-P3
- Always-On Display
- DC Dimming		 - DCI-P3
- Always-On Display
- DC Dimming
Display tests
RGB color space99.7% -
PWM120 Hz -
Response time1 ms -
Contrast∞ Infinity -
Peak brightness test (auto)

Design and build

Height161.3 mm (6.35 inches)163.09 mm (6.42 inches)
Width75.3 mm (2.96 inches)76.8 mm (3.02 inches)
Thickness9.35 mm (0.37 inches)8.78 mm (0.35 inches)
Weight226 g (7.97 oz)226 g (7.97 oz)
WaterproofIP68IP69
Advanced coolingVapor chamberVapor chamber
Rear materialGlassGlass
Frame materialMetalMetal
ColorsWhite, Black, Silver, GreenWhite, Black, Pink
Fingerprint scannerYes, in-displayYes, in-display
Screen-to-body ratio

Performance

Tests of Xiaomi 15 Ultra and Oppo Find X8 Ultra in the benchmarks
SoC
ChipsetQualcomm Snapdragon 8 EliteQualcomm Snapdragon 8 Elite
Max clock4320 MHz4320 MHz
CPU cores8 (2 + 6)8 (2 + 6)
Architecture- 6 cores at 3.53 GHz: Oryon (Phoenix M)
- 2 cores at 4.32 GHz: Oryon (Phoenix L)		- 6 cores at 3.53 GHz: Oryon (Phoenix M)
- 2 cores at 4.32 GHz: Oryon (Phoenix L)
ManufacturingTSMCTSMC
Lithography process3 nanometers3 nanometers
Neural processor (NPU)HexagonHexagon
GraphicsAdreno 830Adreno 830
GPU shading units15361536
GPU clock1100 MHz1100 MHz
FLOPS~3379.2 GFLOPS~3379.2 GFLOPS

Benchmarks

Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Geekbench Compute (GPU) - 25197
Single-core score30083103
Multi-core score90659772
AnTuTu Benchmark 10
15 Ultra
2505127
Find X8 Ultra+11%
2792179
CPU546164628981
GPU10547241214565
Memory467702507469
UX436537441164
Total score25051272792179
Samples[2 tests]Less than 3

Memory

RAM
RAM size12, 16 GB12, 16 GB
Memory typeLPDDR5XLPDDR5X
Memory clock5333 MHz5333 MHz
Channels22
Storage
Storage size256, 512, 1024 GB256, 512, 1024 GB
Storage typeUFS 4.1UFS 4.0
Memory cardNoNo

Software

Operating systemAndroid 15 Android 15
ROMHyperOS 2.0ColorOS 15
OS size23.9 GB -

Battery

Capacity5410 mAh6100 mAh
Max charge power90 W100 W
Battery typeSilicon-Carbon (Si/C)Silicon-Carbon (Si/C)
ReplaceableNoNo
Wireless chargingYes (80 W)Yes (50 W)
Reverse chargingYes, (wireless)Yes, (wireless)
Fast chargingYes (72% in 30 min)Yes
Full charging time0:51 hr -
Battery life tests
Web browsing12:19 hr -
Watching video18:43 hr -
Gaming06:45 hr -
Standby141 hr -
General battery life

Main camera

Matrix50 megapixels50 megapixels
Image resolution8192 x 61448192 x 6144
ZoomOptical, 4.3xOptical, 6x
FlashDual LEDDual LED
StabilizationOpticalOptical
8K video recordingUp to 30FPSNo
4K video recordingUp to 120FPSUp to 120FPS
1080p video recordingUp to 60FPSUp to 120FPS
Slow motion1920 FPS (1080p)480 FPS (720p)
Angle of widest lens115°120°
Lenses1) Standard: 50 MP
2) Telephoto: 200 MP
3) Telephoto: 50 MP
4) Ultrawide: 50 MP
5) Depth
1) Standard: 50 MP
2) Telephoto: 50 MP
3) Telephoto: 50 MP
4) Ultrawide: 50 MP
Camera features - Bokeh mode
- Pro mode
- RAW support		 - Bokeh mode
- Pro mode
- RAW support
Standard lens
Image resolution50 MP50 MP
Aperturef/1.63f/1.8
Focal length23 mm23 mm
SensorSony LYT-900Sony LYT-900
Sensor size1/1.0"1/0"
Pixel size1.6 micron1.6 micron
AutofocusLaser autofocusPhase autofocus (Dual Pixel)
StabilizationOpticalOptical
Telephoto lens
Image resolution200 MP50 MP
Aperturef/2.6f/2.1
Focal length100 mm70 mm
SensorSamsung ISOCELL S5KHP9Sony LYT-700C
Sensor size1/1.4"1/1.56"
Pixel size0.56 micron1 micron
StabilizationOpticalOptical
Ultra-wide lens
Image resolution50 MP50 MP
Aperturef/2.2f/2.0
Focal length14 mm15 mm
SensorSamsung S5KJN5Samsung S5KJN5
Sensor size1/2.76"1/2.75"
Pixel size0.64 micron0.64 micron
StabilizationDigitalDigital

DxOMark main camera tests

Photo quality
Video quality
Generic main camera score
Bokeh80 -
Preview89 -
Zoom169 -
SamplesPhoto samples of Xiaomi 15 Ultra from DxOMark -

Selfie camera

Megapixels32 megapixels32 megapixels
Image resolution6528 x 48966560 x 4928
Aperturef/2.0f/2.4
Focal length22 mm21 mm
SensorOmnivision OV32BSony IMX809
Sensor size1/3.14"1/2.74"
Pixel size0.7 micron0.8 micron
AutofocusNoPhase autofocus
StabilizationDigitalDigital
Video resolution2160p (4K) at 60 FPS2160p (4K) at 60 FPS
Depth sensor (TOF 3D)NoNo

Connectivity

Wi-Fi standardWi-Fi 7 (802.11 a/b/g/n/ac/ax/be)Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
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 version6.05.4
Bluetooth featuresLELE
USB typeUSB Type-CUSB Type-C
USB version3.23.2
USB features - Charging
- USB-Storage mode
- OTG		 - Charging
- USB-Storage mode
- OTG
DisplayPortYesYes
GPSGPS, GLONASS, Beidou, Galileo, QZSS, NAVICGPS, GLONASS, Beidou, Galileo, QZSS
NFC*YesYes
Infrared portYesYes
Network
Number of SIM*22
Type of SIM cardNanoNano
Multi SIM modeStandbyStandby
eSIM support*YesNo
Hybrid slotNoNo
5G supportYesYes

Sound

SpeakersStereoStereo
Headphone audio jackNoNo
FM radioNoNo
Dolby AtmosYes -
Speakers test
Max loudness

Other

CategoryFlagshipFlagship
AnnouncedFebruary 2025April 2025
Release dateFebruary 2025April 2025
Launch price$1099 -
Configurations- 12 / 256 GB
- 16 / 512 GB
- 16 / 1024 GB
- 12 / 256 GB
- 16 / 512 GB
- 16 / 1024 GB
Sensors - Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint		 - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
Bundled chargerYes, 90 WYes, 100 W
Further details
Notes on 15 Ultra:
    - The Chinese version of the Xiaomi 15 Ultra has a 6000 mAh battery, while the international model comes with 5410 mAh, leading to a noticeable difference in battery life.
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
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