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Expert Comparison: Xiaomi Poco F8 Ultra vs Vivo iQOO 15
Xiaomi Poco F8 Ultra
VS
Vivo iQOO 15
Specifications
Xiaomi Poco F8 Ultra
VS
Vivo iQOO 15
Build Quality
| Device Height | 163.3 mm (6.43 inches) | 163.65 mm (6.44 inches) |
| Device Width | 77.8 mm (3.06 inches) | 76.8 mm (3.02 inches) |
| Device Thickness | 7.9 mm (0.31 inches) | 8.1 mm (0.32 inches) |
| Device Weight | 218 g (7.69 oz) | 220 g (7.76 oz) |
| Water Resistance | IP68 | IP69 |
| Enhanced Cooling System | Vapor chamber | Vapor chamber |
| Back Panel Material | Glass | |
| Frame Construction | Metal | Metal |
| Available Color Options | White, Black, Blue | White, Black, Blue |
| Biometric Security | Yes, in-display | Yes, in-display |
| Display Coverage | 91.9% | 90.2% |
System on Chip
| Processing Chip | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite Gen 5 |
| Maximum Clock Speed | 4600 MHz | 4600 MHz |
| Processor Core Count | 8 (2 + 6) | 8 (2 + 6) |
| CPU Architecture | - 6 cores at 3.63 GHz: Oryon Gen 3 Performance- 2 cores at 4.61 GHz: Oryon Gen 3 Prime | - 6 cores at 3.63 GHz: Oryon Gen 3 Performance- 2 cores at 4.61 GHz: Oryon Gen 3 Prime |
| Level 3 Cache | 8 MB | 8 MB |
| Production Details | TSMC | TSMC |
| Chip Manufacturing Process | 3 nanometers | 3 nanometers |
| AI Processing Unit | Hexagon | Hexagon |
| Graphics Processor | Adreno 840 | Adreno 840 |
| Graphics Clock Speed | 1200 MHz | 1200 MHz |
| GPU Shader Units | 1536 | 1536 |
| Computational Performance | ~3686.4 GFLOPS | ~3686.4 GFLOPS |
Random Access Memory
| Memory Capacity | 12 GB | 12 GB |
| Memory Clock Speed | 5300 MHz | 5300 MHz |
| Memory Technology | LPDDR5X | LPDDR5X |
| Memory Channels | 4 | 4 |
Storage Specifications
| Storage Capacity | 256 GB | 256 GB |
| Storage Technology | UFS 4.1 | UFS 4.1 |
| Expandable Storage | No | No |
Operating System
| OS Version | Android 16 | Android 16 |
| Read-Only Memory | HyperOS 3 | OriginOS 6 |
Battery Endurance Tests
| Web Browsing Battery Life | 15:14 hr | |
| Video Playback Battery Life | 22:44 hr | |
| Standby Battery Duration | 124 hr |
Primary Camera
| Camera Sensor Configuration | 50 megapixels | 50 megapixels |
| Zoom Capability | Optical, 5x | Optical, 3x |
| Camera Flash | Dual LED | Dual LED |
| 8K Video Support | Up to 30FPS | Up to 30FPS |
| 4K Video Support | Up to 60FPS | Up to 60FPS |
| Full HD Video Support | Up to 60FPS | Up to 60FPS |
| Slow-Motion Video | 960 FPS (1080p) | 240 FPS (1080p) |
| Widest Lens Field of View | 102° | |
| Camera Lens Count | 1) Standard: 50 MP 2) Telephoto: 50 MP 3) Ultrawide: 50 MP | 1) Standard: 50 MP 2) Telephoto: 50 MP 3) Ultrawide: 50 MP |
| Camera Special Features | - Bokeh mode - Pro mode | - Bokeh mode - Pro mode - RAW support |
Front Camera
| Front Camera Megapixels | 32 megapixels | 32 megapixels |
| Front Camera Aperture | f/2.2 | f/2.2 |
| Front Camera Focal Length | 21 mm | 21 mm |
| Front Camera Sensor | CMOS | GalaxyCore GC32E1 |
| Front Camera Sensor Dimensions | 1/3.44" (≈ 0.29 inch) | 1/3.1" (≈ 0.32 inch) |
| Front Camera Pixel Size | 0.64 micron | 0.7 micron |
| Front Camera Autofocus | No | No |
| Front Camera Stabilization | Digital | Digital |
| Front Camera Video Resolution | 2160p (4K) at 30 FPS | 2160p (4K) at 60 FPS |
| 3D Depth Sensor | No | No |
Network Specifications
| SIM Card Count | 2 | 2 |
| SIM Card Type | Nano | Nano |
| Dual SIM Functionality | Standby | Standby |
| eSIM Capability | Yes | Yes |
| Hybrid SIM Slot | No | No |
| 2G Network Support | GSM 850/900/1800/1900MHz | |
| 3G Network Support | WCDMA B1/B2/B4/B5/B6/B8/B19 | |
| 4G Network Support | LTE B1/B2/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28A/B28B/B38/B40/B41/B42/B66 | |
| 5G Network Compatibility | Yes | Yes |
Audio Specifications
| Sound Output | 2.1 | Stereo |
| 3.5mm Audio Jack | No | No |
| FM Radio | No | No |
Additional Features
| Product Category | Flagship | Flagship |
| Announcement Date | November 2025 | October 2025 |
| Initial Pricing | $729 | $590 |
| Sensor List | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
Final Rating
| Display Rating | 91 | 95 |
| Camera Rating | 87* | 87* |
| Gaming Performance Rating | 98 | 98 |
| Battery Rating | 100 | 100* |
| Connectivity Rating | 98 | 98 |
| Overall Review Score | 93* | 94* |
Phone Price Comparison
Xiaomi Poco F8 Ultra
$729.00 USD
EUR
613.60
INR
66,148.00
NGN
984,148.03
JPY
111,771.23
MYR
2,854.98
CNY
5,043.44
ZAR
11,575.50
RUB
56,282.08
GBP
534.36
CHF
561.55
Vivo iQOO 15
$590.00 USD
EUR
496.60
INR
53,535.42
NGN
796,498.41
JPY
90,459.57
MYR
2,310.62
CNY
4,081.80
ZAR
9,368.37
RUB
45,550.66
GBP
432.47
CHF
454.48
