Redmi K90 Ultra vs Sony Xperia 1 VIII
Which one should you buy?
Who leads where?
- DisplayRedmi K90 Ultra
- CameraRedmi K90 Ultra
- Battery and ChargingRedmi K90 Ultra
Wins are counted from the official values in the table below; the BUY / CONSIDER / WAIT call comes from each product's own decision box. We do not predict prices.
The differences in short
Processor: Redmi K90 Ultra Snapdragon 8 Elite, Sony Xperia 1 VIII Snapdragon 8 Elite Gen 5. Screen Size: Redmi K90 Ultra 6.83", Sony Xperia 1 VIII 6.5". Redmi K90 Ultra leads on Main Camera: 50 MP against 48 MP. Redmi K90 Ultra leads on Battery: 8550 mAh against 5000 mAh. Redmi K90 Ultra leads on Fast Charging: 100 W against 30 W.
Which one for what you do?
Gaming
Redmi K90 Ultra
85% – 69%
Photo / Video
Sony Xperia 1 VIII
73% – 67%
Battery Life
Redmi K90 Ultra
85% – 55%
Daily Use
Redmi K90 Ultra
74% – 59%
The percentages are Kacbu Match scores: computed from official specifications for that use, with no price in them.
 RedmiRedmi K90 UltraNo reviews yet |  SonySony Xperia 1 VIIINo reviews yet | |
|---|---|---|
| Key Differences | ||
| Processor | Snapdragon 8 Elite | Snapdragon 8 Elite Gen 5 |
| Screen Size | 6.83" | 6.5" |
| Main Camera | 50 MP | 48 MP |
| Battery | 8550 mAh | 5000 mAh |
| Fast Charging | 100 W | 30 W |
| Display | ||
| Size | 6.83" | 6.5" |
| Panel | AMOLED | LTPO OLED |
| Resolution | 1280x2772 | 1080x2340 |
| Refresh Rate | 165 Hz | 120 Hz |
| Peak Brightness | 3500 nit | No data |
| Performance | ||
| Chipset | Snapdragon 8 Elite | Snapdragon 8 Elite Gen 5 |
| Graphics Processor | Adreno 830 | Adreno 840 |
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.1 |
| Manufacturing Technology | 3 nm | 3 nm |
| Camera | ||
| Main Camera | 50 MP | 48 MP |
| Main Aperture | f/1.7 | f/1.9 |
| Ultra Wide | 8 MP | 48 MP |
| Telephoto | No data | 2.9x periscope |
| Telephoto Resolution | No data | 48 MP |
| Front Camera | 20 MP | 12 MP |
| Battery and Charging | ||
| Capacity | 8550 mAh | 5000 mAh |
| Cell Type | Silicon-carbon | No data |
| Wired Charging | 100 W | 30 W |
| Wireless Charging Support | No data | Yes |
| Design | ||
| Weight | 227 g | 200 g |
| Thickness | 8.2 mm | 8.3 mm |
| Frame | Aluminum | Aluminum |
| Back Surface | Glass | Gorilla Glass Victus |
| Connectivity | ||
| 5G | Yes | Yes |
| SIM | Dual SIM | Dual eSIM + Nano-SIM |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 6.0 |
| Durability and security | ||
| IP Certification | IP68/IP69 | IP65/IP68 |
| Biometrics | Optical In-Display Fingerprint | Side Fingerprint Sensor |
| Software | ||
| Operating System | Android | Android |
| Version | Android 16 | Android 16 |
| Interface | HyperOS 3 | No data |
| Update Promise | No data | 4 major version updates |
| Multimedia and ports | ||
| Speaker | Stereo (Bose-tuned) | Stereo |
| Headphone jack | No data | Yes (3.5mm) |
| USB | USB Type-C | USB Type-C 3.2 |
Redmi K90 Ultra leads on 7 of 9 compared specs.
This table is based on manufacturers official specifications. Winning on paper does not always mean a difference in everyday use.