| Global Score | |
| 74.2 | 76.7 |
| Basic Information | |
| Asus | Xiaomi |
| Android 15 | Android 11 |
| -- | 2021-05-27 |
| -- | 6.23 x 2.96 x 0.33 inches |
| 8.01 ounces | 6.70 ounces |
| -- | Moonlight White, Neptune Blue and Space Black, |
| -- | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 1199.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.3 inches |
| -- | 2340 x 1080 pixels |
| OLED | IPS LCD |
| -- | 409 pixels per inch |
| 2500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 4.8 | 8.1 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | MediaTek Helio G85 MT6769Z chipset |
| processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 16 GB RAM | 4 GB RAM |
| Adreno 830 GPU | Mali G52 MC2 GPU |
| 6.3 | 9.09 |
| Storage | |
| 512 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 128 GB) external memory slot |
| 17.6 | 10.02 |
| Camera | |
| 50.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| -- | f/1.80 aperture |
| 0.64 inches (1/1.56") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.22 | 11 |
| Networks | |
| -- | Wi-Fi |
| -- | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA |
| Nano SIM | Nano SIM |
| 7.6 | 6.6 |
| Battery Life | |
| 5800mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 7.44 | 5.92 |
| Other Features | |
| Bluetooth 5.3 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Xiaomi Redmi Note 8 2021 is slightly better than the Asus ROG Phone 9 Pro, having a 76.7 score against 74.2. These devices include Android OS (operating system), but the Xiaomi Redmi Note 8 2021 has 11 version while Asus ROG Phone 9 Pro has Android 15 version. Xiaomi Redmi Note 8 2021 has a much sharper screen than Asus ROG Phone 9 Pro, although it has a quite smaller screen.
Asus ROG Phone 9 Pro counts with a much bigger memory to install applications and games or saving photos and videos than Xiaomi Redmi Note 8 2021, because although it has no slot for an SD memory card, it also counts with 512 GB internal storage capacity. Xiaomi Redmi Note 8 2021 has an extremely better CPU than Asus ROG Phone 9 Pro, although it has a smaller amount of RAM, they both have 8 processing cores.
The Asus ROG Phone 9 Pro counts with a much longer battery performance than Xiaomi Redmi Note 8 2021, because it has 5800mAh of battery capacity against 4000mAh. Asus ROG Phone 9 Pro shoots slightly better photos and videos than Xiaomi Redmi Note 8 2021, because it has a more mega-pixels back-facing camera, a way bigger sensor capturing way higher quality videos and pictures and a lot higher video quality.
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