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  3. Find X8 Ultra vs 15 Ultra

OPPO Find X8 Ultra vs Xiaomi 15 Ultra

What Find X8 Ultra does better (6) and where 15 Ultra wins (11) — every spec side by side.

OPPO Find X8 Ultra
OPPO · 2025Find X8 Ultra
9.6Score
6 advantages
vs
Xiaomi 15 Ultra
Xiaomi · 202515 Ultra
9.6Score
11 advantages≈ $900
9.1Display9.0
9.3Performance9.4
9.8Camera9.7
9.4Battery9.3
9.3Features9.5
Dimensions

Size comparison

Find X8 Ultra15 Ultra
76.8 × 163.18.875.3 × 161.39.4
Find X8 Ultra15 UltraDifference
Height163.1 mm161.3 mm+1.8 mm
Width76.8 mm75.3 mm+1.5 mm
Thickness8.8 mm9.4 mm−0.6 mm
Weight226 g226 g=

Drawn to the same scale from the official dimensions (front and side).

Why is Find X8 Ultra better than 15 Ultra?

  1. Battery capacity6,100 mAh vs 5,410 mAh+13%
  2. Wired charging100 W vs 90 W+11%
  3. Optical zoom6× vs 4.3×+40%
  4. 3DMark Wild Life Extreme6,644 vs 5,626+18%
  5. Charged in 30 min100% vs 72%+39%
  6. Thickness8.8 mm vs 9.4 mm+7%

Why is 15 Ultra better than Find X8 Ultra?

  1. AnTuTu score2,710,432 vs 3,030,376+12%
  2. Measured brightness1,157 nits vs 1,588 nits+37%
  3. Geekbench 6 (multi-core)9,503 vs 9,710+2%
  4. Peak brightness2,500 nits vs 3,200 nits+28%
  5. Max video4K vs 8K
  6. eSIMNo · Find X8 Ultra: Yes
  7. Pixel density510 ppi vs 522 ppi+2%
  8. Wireless charging power50 W vs 80 W+60%
  9. Main camera aperturef/1.8 vs f/1.6+12%
  10. Bluetooth5.4 vs 6+11%
  11. Loudspeaker loudness-26.3 LUFS vs -24.1 LUFS+-8%
Specifications

Side by side

Xiaomi 15 UltraXiaomi 15 Ultra≈ $9009.6
Design
Weight226 g226 g
Thickness8.8 mm9.4 mm
Height163.1 mm161.3 mm
Width76.8 mm75.3 mm
Frame—Aluminium
BackGlassSilicone polymer
Ingress protectionIP68IP68
Water resistance (IPx)IPx8IPx8
Glass protectionCorning Gorilla Glass (unspecified version)Xiaomi Shield Glass 2.0
ColoursMatte Black, Pure White, Shell PinkBlack, White, Silver Chrome, Green
Display
Screen size6.8″6.7″
PanelLTPO AMOLEDLTPO AMOLED
OLED panelYesYes
LTPO (adaptive 1–120 Hz)YesYes
Resolution (width)1,440 px1,440 px
Resolution (height)3,168 px3,200 px
Pixel density510 ppi522 ppi
Refresh rate120 Hz120 Hz
Peak brightness2,500 nits3,200 nits
Measured brightness1,157 nits1,588 nits
Screen-to-body ratio90.2%89.7%
HDRYesYes
Performance
ChipsetQualcomm SM8750-AB Snapdragon 8 EliteQualcomm SM8750-AB Snapdragon 8 Elite
Chip makerQualcommQualcomm
Process3 nm3 nm
CPU cores88
CPU frequency4.32 GHz4.32 GHz
GPUAdreno 830Adreno 830
AnTuTu score2,710,4323,030,376
Geekbench 6 (multi-core)9,5039,710
3DMark Wild Life Extreme6,6445,626
Memory
RAM16 GB16 GB
Storage (max)1,024 GB1,024 GB
Storage (base)256 GB256 GB
Storage typeUFS 4.1UFS 4.1
Memory card slotNoNo
Camera
Main camera50 MP50 MP
Main camera aperturef/1.8f/1.6
Main sensor size1"1"
Rear cameras44
Optical stabilisationYesYes
Ultra-wide cameraYesYes
Telephoto cameraYesYes
Optical zoom6×4.3×
Max video4K8K
4K video frame rate120 fps120 fps
Selfie camera32 MP32 MP
4K selfie videoYesYes
Battery
Battery capacity6,100 mAh5,410 mAh
Battery typeSi/CSi/C
Active use (test)16.3 h16.2 h
Wired charging100 W90 W
Charged in 30 min100%72%
Wireless chargingYesYes
Wireless charging power50 W80 W
Reverse wireless chargingYesYes
Connectivity
5GYesYes
eSIMNoYes
Dual SIMYesYes
Wi-Fi standardWi-Fi 7Wi-Fi 7
Bluetooth5.46
NFCYesYes
USBUSB Type-C 3.2USB Type-C 3.2 Gen 2
USB version3.23.2
Video outputYesYes
Satellite messagingYesYes
Infrared portYesYes
Dual-band GPSYesYes
Satellite navigationGLONASS, GALILEO, BDS, QZSSGLONASS, GALILEO, BDS, QZSS, NavIC
Features
Stereo speakersYesYes
3.5 mm headphone jackNoNo
Loudspeaker loudness-26.3 LUFS-24.1 LUFS
Fingerprint sensorUnder display, ultrasonicUnder display, ultrasonic
Barometer—Yes
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compassFingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
SAR (head)—1 W/kg
Software
OS at launchAndroid 15Android 15
PlatformAndroidAndroid
InterfaceColorOS 16HyperOS 3
Major OS updates promised—4
EU label
Energy class—A
Battery charge cycles—1,000
Endurance per cycle—59 h
Repairability class—C
Drop resistance class—C
To compare: 0up to 4 models
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