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 — 84/100 vs 33/100 (a 51-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).
Oppo K12x (China)
Vivo iQOO 15 Ultra
- Lighter: 191g vs 227g
- Better design/ergonomics (61/100 vs 16/100)
- Higher AnTuTu: 4602290 vs 592015
- Better Geekbench Single: 3640 vs 905
- Better Geekbench Multi: 11033 vs 2003
- Bigger battery: 7400 vs 5500 mAh
- Faster charging: 120W vs 80W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (97/100 vs 0/100)
- Better camera (74/100 vs 27/100)
- Longer battery life (86/100 vs 58/100)
Comparing the Oppo K12x (China) vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 51 points higher (84/100 vs 33/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (97/100 vs 0/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (74/100 vs 27/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (86/100 vs 58/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (97/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (74/100 vs 27/100). In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Oppo K12x (China) (86/100 vs 58/100). In the "design" category, the Oppo K12x (China) significantly outperforms the Vivo iQOO 15 Ultra (61/100 vs 16/100). In the "value for money" category, both devices are on the same level — 55/100.
| 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 | 3640 | |
| Geekbench Multi | 2003 | 11033 | |
| 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 | |
| Price | — | $799 |
Oppo K12x (China)
- Main: 50MP f/f/1.8
- Front: 16MP
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
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
Oppo K12x (China)
- 5500 mAh
- Wired: 80W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
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.
Oppo K12x (China)
Price unknownperformance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (97/100 vs 0/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K12x (China) (74/100 vs 27/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Oppo K12x (China) (86/100 vs 58/100).
design
In the "design" category, the Oppo K12x (China) significantly outperforms the Vivo iQOO 15 Ultra (61/100 vs 16/100).
value for money
In the "value for money" category, both devices are on the same level — 55/100.
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 51 points (84/100 vs 33/100).
What is the rating of the Oppo K12x (China) and the Vivo iQOO 15 Ultra?
The Oppo K12x (China) has a MobileRank rating of 33/100, the Vivo iQOO 15 Ultra — 84/100.
Which has the better camera: the Oppo K12x (China) or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (74/100 vs 27/100).
Which is more powerful: the Oppo K12x (China) or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (97/100 vs 0/100).
Should you choose the Oppo K12x (China) over the Vivo iQOO 15 Ultra?
The Oppo K12x (China) is a better fit for everyday use. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life.