Oppo K12x (China) vs Vivo iQOO 15 Ultra
The Oppo K12x (China) (2024) runs on the Qualcomm Snapdragon 695 5G, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 51/100 (a 38-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 5500); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 592,015); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Oppo K12x (China) doesn't; the Oppo K12x (China) is noticeably lighter (191g vs 227g).
Profile comparison
Category scores
Oppo K12x (China)
Vivo iQOO 15 Ultra
What makes Oppo K12x (China) better?
- Lighter: 191g vs 227g
- Better portability (63/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 592015
- Better Geekbench Single: 3639 vs 905
- Better Geekbench Multi: 11047 vs 2101
- Bigger battery: 7400 vs 5500 mAh
- Faster charging: 120W vs 80W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 46/100)
- Better camera (78/100 vs 32/100)
- Longer battery life (92/100 vs 62/100)
- Better display (99/100 vs 79/100)
Comparison verdict
Comparing the Oppo K12x (China) vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 38 points higher (89/100 vs 51/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 46/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 62/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (99/100 vs 46/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Oppo K12x (China) (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (78/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (92/100 vs 62/100). In the "portability" category, the Oppo K12x (China) notably outperforms the Vivo iQOO 15 Ultra (63/100 vs 35/100).
Specs comparison
| Specification | Oppo K12x (China) | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 695 5G | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 592015 | 4602290 | |
| Geekbench Single | 905 | 3639 | |
| Geekbench Multi | 2101 | 11047 | |
| Display | 6.7" OLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x2400 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 5500 mAh | 7400 mAh | |
| Charging | 80W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB / 24GB | |
| Storage | 128GB / 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 14, ColorOS 14 | Android 16 | |
| Brightness (peak) | 2100 nits | 8000 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 162.9×75.6×8.1 mm | 163.7×76.8×8.7 mm | |
| Weight | 191 g | 227 g | |
| Launch price | — | $799 |
Camera comparison
Oppo K12x (China)
- Main: 50MP f/1.8
- Front: 16MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Oppo K12x (China)
- 6.7" OLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Oppo K12x (China)
- 5500 mAh
- Wired: 80W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Oppo K12x (China) and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Oppo K12x (China) by 87.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo K12x (China)
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (99/100 vs 46/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Oppo K12x (China) (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (78/100 vs 32/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (92/100 vs 62/100).
portability
In the "portability" category, the Oppo K12x (China) notably outperforms the Vivo iQOO 15 Ultra (63/100 vs 35/100).
Frequently asked questions
Which is better: the Oppo K12x (China) or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) by 38 points (89/100 vs 51/100).
What is the rating of the Oppo K12x (China) and the Vivo iQOO 15 Ultra?
The Oppo K12x (China) has a MobileRank rating of 51/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Oppo K12x (China) or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 32/100).
Which is more powerful: the Oppo K12x (China) or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 46/100).
Should you choose the Oppo K12x (China) over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.