Phone Comparison
Compare Xiaomi Poco F8 Ultra vs Xiaomi Redmi K90 Ultra
Full specs, price, score, camera, battery, display, network, and performance comparison in one side-by-side matrix.
Better Camera
Xiaomi Poco F8 Ultra
Better Battery
Xiaomi Redmi K90 Ultra
Better Display
Xiaomi Redmi K90 Ultra
Better Performance
Xiaomi Poco F8 Ultra
Better Value
Xiaomi Redmi K90 Ultra
Overview
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Brand | Xiaomi | Xiaomi |
| Category | Flagship | Flagship |
| Price | $840 | $440 |
| Display | 6.9 inches | 6.83 inches |
| Processor | Snapdragon 8 Elite Gen 5 (3 nm) | Snapdragon 8 Onyon V2 Elite (3 nm) |
| RAM | 12GB, 16GB | 12GB, 16GB |
| Storage | 256GB, 512GB | 256GB, 512GB |
| Battery | 6500 mAh | Si/C Li-ion 8550 mAh |
| Main Camera | 50 MP | 50 MP |
| OS | Android 16, HyperOS 3 | Android 16, HyperOS 3 |
Network
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Technology | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE / 5G |
| 2G Bands | N/A | GSM 850 / 900 / 1800 / 1900 |
| 3G Bands | N/A | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Bands | N/A | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 |
| 5G Bands | N/A | 1, 3, 5, 7, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA |
| Speed | N/A | HSPA, LTE, 5G |
Display
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Size | 6.9 inches, 116.6 cm^2 (~91.8% screen-to-body ratio) | 6.83 inches, 114.5 cm² (~90.3% screen-to-body ratio) |
| Resolution | 1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density) | 1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density) |
| Type | AMOLED, 68B colors, 2560Hz PWM | AMOLED, 68B colors, PWM |
| Refresh Rate | 120Hz | 165Hz |
| Brightness | 2000 nits (HBM), 3500 nits (peak) | 9500 nits (peak) |
| Protection | Poco Shield Glass | N/A |
| HDR | Dolby Vision, HDR10+ | Dolby Vision, HDR10+ |
Performance
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Chipset | Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) | Qualcomm SM8750-AB Snapdragon 8 Onyon V2 Elite (3 nm) |
| CPU | Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M) | Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M) |
| GPU | Adreno 840 | Adreno 830 (1200 MHz) |
| RAM | 12GB, 16GB | 12GB, 16GB |
| Storage | 256GB, 512GB | 256GB, 512GB |
| Storage Type | UFS 4.1 | UFS 4.1 |
| Expandable | No | No |
Main Camera
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Type | Triple | Dual |
| Main | 50 MP, f/1.7, 23mm (wide), 1/1.31", 1.2µm, dual pixel PDAF, OIS | 50 MP, f/1.7, 24mm (wide), 1/1.55", 1.0µm, PDAF, OIS |
| Ultrawide | 50 MP, f/2.4, 18mm, 102° (ultrawide), 1/2.88", 0.61µm | 8 MP, f/2.2, 15mm (ultrawide), 1/4.0", 1.12µm |
| Features | Color spectrum sensor, LED flash, HDR, panorama | Color spectrum sensor, LED flash, HDR, panorama |
| Video | 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS, HDR10+ | 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS, HDR10+ |
Selfie Camera
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Type | Single | Single |
| Selfie | 32 MP, f/2.2, 21mm (wide), 1/3.44", 0.64µm | 20 MP (wide) |
| Features | HDR | N/A |
| Video | 4K@30fps, 1080p@30/60fps | 1080p@30/60fps |
Battery
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Capacity | 6500 mAh | Si/C Li-ion 8550 mAh |
| Charging | 100W wired, PD3.0, QC3+, 100W PPS, 100% in 38 mins, | 100W wired, 100W PPS, PD3.0 |
| Wireless | 50W wireless, 50% in 31 mins | N/A |
| Reverse | N/A | 22.5W reverse wired |
Body
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Dimensions | 163.3 x 77.8 x 7.9 mm or 8.3 mm | 162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in) |
| Weight | 218 g or 220 g (7.69 oz) | 227 g (8.01 oz) |
| Build | Glass front (Poco Shield Glass), aluminum frame, glass-fiber reinforced plastic back or silicone polymer back | Glass front, aluminum frame |
| SIM | Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) | Nano-SIM + Nano-SIM |
| Water Resistance | IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) | IP68/IP69 dust tight and water resistant (high pressure water jets; immsersible up to 1.5m for 30 min) |
| Colors | Black, White, Denim Blue | Black, Blue, Silver |
Features & Connectivity
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Connectivity | Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct | 6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5.0, ASHA, MIHC | GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS | Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct |
| NFC | Yes (market/region dependent) | Yes |
| USB | USB Type-C 3.2, Display Port, OTG | USB Type-C, OTG |
| Biometrics | Fingerprint (under display, ultrasonic) | Fingerprint (under display, optical) |
| Sensors | Accelerometer, proximity, gyro, compass | Accelerometer, proximity, gyro, compass |
Audio
| Spec | Xiaomi Poco F8 Ultra | Xiaomi Redmi K90 Ultra |
|---|---|---|
| Audio | Tuned by Bose, Bose 2.1 stereo sound system with a woofer, 24-bit/192kHz Hi-Res & Hi-Res wireless audio | Yes, with stereo speakers (with Dolby Atmos) |
| 3.5mm Jack | No | No |
| High Bitrate Audio | N/A | Yes (Native 24-bit/192kHz Hi-Res Audio mastering, Bose-tuned 1115X symmetrical dual stereo speakers, Dolby Atmos, Snapdragon Sound, and high-definition LDAC/LHDC 5.0 streaming via Bluetooth 5.4 and Type-C 3.2) |