Oppo Find X8 Pro vs Samsung Galaxy S21 Ultra
The Verdict
Oppo's Find X8 Pro delivers a compelling modern flagship experience at a lower price point than Samsung's aging S21 Ultra. Superior display brightness (4500 vs 1500 nits) makes outdoor visibility dramatically better, while the newer MediaTek Dimensity 9400 processor outperforms the dated Snapdragon 888. Camera versatility favors Oppo with its 50MP telephoto and ultrawide sensors against Samsung's lower-resolution alternatives, though Samsung's 108MP main sensor captures impressive detail. Battery life advantages go decisively to Oppo: 5910mAh capacity with 80W fast charging versus 5000mAh with 25W charging. Software is fresher on the Find X8 Pro with Android 15, compared to the S21 Ultra's outdated Android 11. Build quality is comparable, though Oppo's IP69 rating slightly exceeds Samsung's IP68. Samsung's 8K video capability is a notable differentiator but rarely practical. For users prioritizing value, performance, and current technology, the Oppo Find X8 Pro is the stronger choice.
Who Should Buy
Buy the Oppo Find X8 Pro if…
- →Quad 50MP Hasselblad camera system with dual telephoto lenses
- →4K@120fps Dolby Vision video recording is professional-grade
- →5910 mAh battery with 80W wired and 50W wireless charging
Buy the Samsung Galaxy S21 Ultra if…
- →100x Space Zoom with 10x optical telephoto
- →108 MP main sensor with excellent detail
- →S Pen support (first S-series to do so)
Category Scores
Pros & Cons
Oppo Find X8 Pro
Pros
- Quad 50MP Hasselblad camera system with dual telephoto lenses
- 4K@120fps Dolby Vision video recording is professional-grade
- 5910 mAh battery with 80W wired and 50W wireless charging
- IP69 durability for extreme water and dust resistance
- 4500-nit display brightness is outstanding
Cons
- Expensive at $999 with limited US availability
- ColorOS is improving but still has bloatware tendencies
- 3x zoom falls short of 5x periscope competitors
- Heavy at 215 g with a large camera bump
Samsung Galaxy S21 Ultra
Pros
- 100x Space Zoom with 10x optical telephoto
- 108 MP main sensor with excellent detail
- S Pen support (first S-series to do so)
- 1440p 120Hz LTPO adaptive display
- 5000 mAh battery with all-day endurance
Cons
- Heavy at 227 g
- Snapdragon 888 can overheat under load
- S Pen sold separately, no silo slot
- Slow 25W charging for the class
- No charger or earbuds in the box
Full Specifications
| Spec | Oppo Find X8 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Software | Android 15 (ColorOS 15) | Android 11, One UI 3.1 |
| Body | ||
| Weight | 215 g | 227 g |
| Material | Aluminum frame, Gorilla Glass Victus 2 | Aluminum frame, Gorilla Glass Victus |
| IP rating | IP69 | IP68 |
| Dimensions | 162.3 x 76.2 x 8.2 mm | 165.1 x 75.6 x 8.9 mm |
| Camera | ||
| Main camera | 50 MP, f/1.6, OIS (LYT-808 sensor) | 108 MP, f/1.8, OIS |
| Front camera | 32 MP, f/2.4 | 40 MP, f/2.2 |
| Video | 4K@120fps Dolby Vision | 8K@24fps, 4K@60fps |
| Telephoto | 50 MP, f/2.6, 3x optical zoom, OIS | 10 MP, f/2.4, 3x optical zoom |
| Ultrawide | 50 MP, f/2.0, 120-degree | 12 MP, f/2.2 |
| Periscope | — | 10 MP, f/4.9, 10x optical zoom |
| Memory | ||
| RAM | 16 GB | 12 GB |
| Storage options | 256 GB, 512 GB | 128 GB, 256 GB, 512 GB |
| Battery | ||
| Capacity | 5910 mAh | 5000 mAh |
| Charging | 80W wired | 25W wired |
| Wireless charging | 50W wireless | 15W wireless |
| Display | ||
| Size | 6.78 inches | 6.8 inches |
| Type | LTPO AMOLED | Dynamic AMOLED 2X, LTPO |
| Resolution | 2780 x 1264 | 3200 x 1440 |
| Refresh rate | 1-120Hz | 120Hz |
| Brightness (nits) | 4500 | 1500 |
| Processor | ||
| CPU | Octa-core | Octa-core (1x2.84 GHz + 3x2.42 GHz + 4x1.8 GHz) |
| GPU | Immortalis-G925 | Adreno 660 |
| Chipset | MediaTek Dimensity 9400 | Qualcomm Snapdragon 888 |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 3.2 | USB-C 3.2 |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 6 |
| Bluetooth | 5.4 | 5.2 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in phones, see all Oppo products or all Samsung products. View full details for the Oppo Find X8 Pro or the Samsung Galaxy S21 Ultra.