OPPO Find X8 Ultra vs Vivo X21i
The OPPO Find X8 Ultra (2025) runs on the Snapdragon 8 Elite, while the Vivo X21i (2018) runs on the MediaTek Helio P60. By overall MobileRank rating, the OPPO Find X8 Ultra leads — 86/100 vs 30/100 (a 56-point difference). Key differences: the OPPO Find X8 Ultra has the bigger battery (6100 mAh vs 3425); the main camera is 50 MP vs 12 MP; the OPPO Find X8 Ultra is faster in AnTuTu (3,183,101 vs 314,537); the OPPO Find X8 Ultra has NFC for contactless payments, the Vivo X21i doesn't; the Vivo X21i is noticeably lighter (159g vs 226g).
Profile comparison
Category scores
OPPO Find X8 Ultra
Vivo X21i
What makes OPPO Find X8 Ultra better?
- Higher AnTuTu: 3183101 vs 314537
- Better Geekbench Single: 3013 vs 341
- Better Geekbench Multi: 9287 vs 779
- Bigger battery: 6100 vs 3425 mAh
- Better main camera: 50MP vs 12MP
- Higher performance (91/100 vs 20/100)
- Better camera (94/100 vs 15/100)
- Longer battery life (78/100 vs 15/100)
- Better display (89/100 vs 82/100)
What makes Vivo X21i better?
- Lighter: 159g vs 226g
- Better portability (94/100 vs 35/100)
Comparison verdict
Comparing the OPPO Find X8 Ultra vs the Vivo X21i, the OPPO Find X8 Ultra scores 56 points higher (86/100 vs 30/100). In the "performance" category, the OPPO Find X8 Ultra leads (91/100 vs 20/100). In the "camera" category, the OPPO Find X8 Ultra leads (94/100 vs 15/100). In the "battery" category, the OPPO Find X8 Ultra leads (78/100 vs 15/100). In the "performance" category, the OPPO Find X8 Ultra significantly outperforms the Vivo X21i (91/100 vs 20/100). In the "display" category, the OPPO Find X8 Ultra is a bit better (89/100 vs 82/100). In the "camera" category, the OPPO Find X8 Ultra significantly outperforms the Vivo X21i (94/100 vs 15/100). In the "battery" category, the OPPO Find X8 Ultra significantly outperforms the Vivo X21i (78/100 vs 15/100). In the "portability" category, the Vivo X21i significantly outperforms the OPPO Find X8 Ultra (94/100 vs 35/100).
Specs comparison
| Specification | OPPO Find X8 Ultra | Vivo X21i | |
|---|---|---|---|
| Processor | Snapdragon 8 Elite | MediaTek Helio P60 | |
| AnTuTu | 3183101 | 314537 | |
| Geekbench Single | 3013 | 341 | |
| Geekbench Multi | 9287 | 779 | |
| Display | 6.8" LTPO AMOLED | 6.3" Super AMOLED | |
| Resolution | 3168x1440 | 1080x2280 | |
| Refresh rate | 120 Hz | — | |
| Battery | 6100 mAh | 3425 mAh | |
| Charging | 80W | — | |
| Wireless charging | 50W | — | |
| DXOMark (camera) | 168 | — | |
| Main camera | 50 MP | 12 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 24 MP | |
| RAM | 12GB / 16GB | 4GB / 6GB | |
| Storage | 256GB / 512GB / 1TB | 64GB / 128GB | |
| OS | Android 15 | Android 8.1 (Oreo); Funtouch 4 | |
| Brightness (peak) | 2500 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 163.1×76.8×8.8 mm | 154.4×75.0×7.0 mm | |
| Weight | 226 g | 159 g | |
| Launch price | $999 | — |
Camera comparison
OPPO Find X8 Ultra
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X21i
- Main: 12MP f/1.8
- Front: 24MP
Display comparison
OPPO Find X8 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Vivo X21i
- 6.3" Super AMOLED
- Resolution: 1080x2280
- Refresh rate: —
Battery and charging
OPPO Find X8 Ultra
- 6100 mAh
- NanoReview test: web browsing 13:45 hrs, total 28:25 hrs
- Wired: 80W
- Wireless: 50W
Vivo X21i
- 3425 mAh
- Wireless charging: no data
Overall performance score
We compared OPPO Find X8 Ultra and Vivo X21i, covering their specs and all relevant benchmarks.
OPPO Find X8 Ultra leads Vivo X21i by 912.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo X21i
Price unknownDetailed category analysis
performance
In the "performance" category, the OPPO Find X8 Ultra significantly outperforms the Vivo X21i (91/100 vs 20/100).
display
In the "display" category, the OPPO Find X8 Ultra is a bit better (89/100 vs 82/100).
camera
In the "camera" category, the OPPO Find X8 Ultra significantly outperforms the Vivo X21i (94/100 vs 15/100).
battery
In the "battery" category, the OPPO Find X8 Ultra significantly outperforms the Vivo X21i (78/100 vs 15/100).
portability
In the "portability" category, the Vivo X21i significantly outperforms the OPPO Find X8 Ultra (94/100 vs 35/100).
Frequently asked questions
Which is better: the OPPO Find X8 Ultra or the Vivo X21i?
The OPPO Find X8 Ultra significantly outperforms the Vivo X21i by 56 points (86/100 vs 30/100).
What is the rating of the OPPO Find X8 Ultra and the Vivo X21i?
The OPPO Find X8 Ultra has a MobileRank rating of 86/100, the Vivo X21i — 30/100.
Which has the better camera: the OPPO Find X8 Ultra or the Vivo X21i?
The OPPO Find X8 Ultra leads on camera score (94/100 vs 15/100).
Which is more powerful: the OPPO Find X8 Ultra or the Vivo X21i?
The OPPO Find X8 Ultra leads on performance (91/100 vs 20/100).
Should you choose the OPPO Find X8 Ultra over the Vivo X21i?
The OPPO Find X8 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.