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- Find X8 Ultra vs Redmi K90
OPPO Find X8 Ultra vs Xiaomi Redmi K90
What Find X8 Ultra does better (10) and where Redmi K90 wins (7) — every spec side by side.
vs
9.1Display9.4
9.3Performance9.5
9.8Camera9.1
9.4Battery9.5
9.3Features9.3
Dimensions
Size comparison
Find X8 UltraRedmi K90
| Find X8 Ultra | Redmi K90 | Difference | |
|---|---|---|---|
| Height | 163.1 mm | 157.5 mm | +5.6 mm |
| Width | 76.8 mm | 75.3 mm | +1.5 mm |
| Thickness | 8.8 mm | 8 mm | +0.8 mm |
| Weight | 226 g | 206 g | +20 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Find X8 Ultra better than Redmi K90?
- Optical zoom6× vs 2.5×2.4×
- Wireless chargingYes · Redmi K90: No
- Pixel density510 ppi vs 419 ppi+22%
- 4K video frame rate120 fps vs 60 fps2×
- 4K selfie videoYes · Redmi K90: No
- Screen size6.8″ vs 6.6″+3%
- Selfie camera32 MP vs 20 MP+60%
- Rear cameras4 vs 3+33%
- Resolution (width)1,440 px vs 1,156 px+25%
- Main camera aperturef/1.8 vs f/1.9+6%
Why is Redmi K90 better than Find X8 Ultra?
- Refresh rate120 Hz vs 560 Hz4.7×
- Battery capacity6,100 mAh vs 7,100 mAh+16%
- AnTuTu score2,710,432 vs 3,126,494+15%
- Peak brightness2,500 nits vs 3,500 nits+40%
- Max video4K vs 8K
- Weight226 g vs 206 g+10%
- Thickness8.8 mm vs 8 mm+10%
Specifications
Side by side
| Design | ||
| Weight | 226 g | 206 g |
| Thickness | 8.8 mm | 8 mm |
| Height | 163.1 mm | 157.5 mm |
| Width | 76.8 mm | 75.3 mm |
| Frame | — | Aluminium |
| Back | Glass | — |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Glass protection | Corning Gorilla Glass (unspecified version) | Xiaomi Dragon Crystal Glass |
| Colours | Matte Black, Pure White, Shell Pink | Black, White, Blue, Purple |
| Display | ||
| Screen size | 6.8″ | 6.6″ |
| Panel | LTPO AMOLED | AMOLED |
| OLED panel | Yes | Yes |
| LTPO (adaptive 1–120 Hz) | Yes | — |
| Resolution (width) | 1,440 px | 1,156 px |
| Resolution (height) | 3,168 px | 2,510 px |
| Pixel density | 510 ppi | 419 ppi |
| Refresh rate | 120 Hz | 560 Hz |
| Peak brightness | 2,500 nits | 3,500 nits |
| Measured brightness | 1,157 nits | — |
| Screen-to-body ratio | 90.2% | 89.8% |
| HDR | Yes | Yes |
| Performance | ||
| Chipset | Qualcomm SM8750-AB Snapdragon 8 Elite | Qualcomm SM8750-AB Snapdragon 8 Elite |
| Chip maker | Qualcomm | Qualcomm |
| Process | 3 nm | 3 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 4.32 GHz | 4.32 GHz |
| GPU | Adreno 830 | Adreno 830 |
| AnTuTu score | 2,710,432 | 3,126,494 |
| Geekbench 6 (multi-core) | 9,503 | 9,442 |
| 3DMark Wild Life Extreme | 6,644 | — |
| Memory | ||
| RAM | 16 GB | 16 GB |
| Storage (max) | 1,024 GB | 1,024 GB |
| Storage (base) | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.1 |
| Memory card slot | No | No |
| Camera | ||
| Main camera | 50 MP | 50 MP |
| Main camera aperture | f/1.8 | f/1.9 |
| Main sensor size | 1" | 1/1.55" |
| Rear cameras | 4 | 3 |
| Optical stabilisation | Yes | Yes |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | Yes | Yes |
| Optical zoom | 6× | 2.5× |
| Max video | 4K | 8K |
| 4K video frame rate | 120 fps | 60 fps |
| Selfie camera | 32 MP | 20 MP |
| 4K selfie video | Yes | No |
| Battery | ||
| Battery capacity | 6,100 mAh | 7,100 mAh |
| Battery type | Si/C | Si/C |
| Active use (test) | 16.3 h | — |
| Wired charging | 100 W | 100 W |
| Charged in 30 min | 100% | — |
| Wireless charging | Yes | No |
| Wireless charging power | 50 W | — |
| Reverse wireless charging | Yes | — |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.4 |
| NFC | Yes | Yes |
| USB | USB Type-C 3.2 | USB Type-C |
| USB version | 3.2 | — |
| Video output | Yes | — |
| Satellite messaging | Yes | — |
| Infrared port | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS, NavIC |
| Features | ||
| Stereo speakers | Yes | Yes |
| 3.5 mm headphone jack | No | No |
| Loudspeaker loudness | -26.3 LUFS | — |
| Fingerprint sensor | Under display, ultrasonic | Under display, ultrasonic |
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass |
| Software | ||
| OS at launch | Android 15 | Android 16 |
| Platform | Android | Android |
| Interface | ColorOS 16 | HyperOS 3 |
