Oppo K12x vs Vivo X300 Ultra
The Oppo K12x (2024) runs on the Qualcomm Snapdragon 695 5G, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 51/100 (a 40-point difference). Key differences: the Vivo X300 Ultra has the bigger battery (7000 mAh vs 5500); the main camera is 50 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 592,015); the Vivo X300 Ultra has NFC for contactless payments, the Oppo K12x doesn't; the Oppo K12x is noticeably lighter (191g vs 230g).
Oppo K12x
Vivo X300 Ultra
- Lighter: 191g vs 230g
- Better portability (63/100 vs 39/100)
- Higher AnTuTu: 4247433 vs 592015
- Better Geekbench Single: 3640 vs 905
- Better Geekbench Multi: 11033 vs 2003
- Bigger battery: 7000 vs 5500 mAh
- Faster charging: 100W vs 80W
- Better main camera: 200MP vs 50MP
- Higher performance (99/100 vs 46/100)
- Better camera (96/100 vs 32/100)
- Longer battery life (85/100 vs 62/100)
- Better display (89/100 vs 79/100)
Comparing the Oppo K12x vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 40 points higher (91/100 vs 51/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 46/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 32/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 62/100). In the "performance" category, the Vivo X300 Ultra significantly outperforms the Oppo K12x (99/100 vs 46/100). In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 79/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the Oppo K12x (96/100 vs 32/100). In the "battery" category, the Vivo X300 Ultra notably outperforms the Oppo K12x (85/100 vs 62/100). In the "portability" category, the Oppo K12x notably outperforms the Vivo X300 Ultra (63/100 vs 39/100).
| Specification | Oppo K12x | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 695 5G | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 592015 | 4247433 | |
| Geekbench Single | 905 | 3640 | |
| Geekbench Multi | 2003 | 11033 | |
| Display | 6.7" OLED | 6.8" LTPO OLED | |
| Resolution | 1080x2400 | 3168x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5500 mAh | 7000 mAh | |
| Charging | 80W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 14, ColorOS 14 | Android 16 | |
| Brightness (peak) | 2100 nits | — | |
| NFC | no | yes | |
| Protection | — | IP69 | |
| Dimensions | 162.9×75.6×8.1 mm | 163.0×76.8×8.2 mm | |
| Weight | 191 g | 230 g | |
| Launch price | — | $950 |
Oppo K12x
- Main: 50MP f/f/1.8
- Front: 16MP
Vivo X300 Ultra
- Main: 200MP f/f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Oppo K12x
- 6.7" OLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Oppo K12x
- 5500 mAh
- Wired: 80W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
We compared Oppo K12x and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads Oppo K12x by 86.1% in our overall performance rating.
Oppo K12x
Price unknownperformance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the Oppo K12x (99/100 vs 46/100).
display
In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 79/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the Oppo K12x (96/100 vs 32/100).
battery
In the "battery" category, the Vivo X300 Ultra notably outperforms the Oppo K12x (85/100 vs 62/100).
portability
In the "portability" category, the Oppo K12x notably outperforms the Vivo X300 Ultra (63/100 vs 39/100).
Which is better: the Oppo K12x or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the Oppo K12x by 40 points (91/100 vs 51/100).
What is the rating of the Oppo K12x and the Vivo X300 Ultra?
The Oppo K12x has a MobileRank rating of 51/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the Oppo K12x or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 32/100).
Which is more powerful: the Oppo K12x or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 46/100).
Should you choose the Oppo K12x over the Vivo X300 Ultra?
The Oppo K12x is a better fit for everyday use. The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.