Oppo K12 vs Xiaomi 17 Ultra (China)
The Oppo K12 (2024) runs on the Qualcomm Snapdragon 7 Gen 3, while the Xiaomi 17 Ultra (China) (2025) runs on the Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Xiaomi 17 Ultra (China) leads — 87/100 vs 57/100 (a 30-point difference). Key differences: the Xiaomi 17 Ultra (China) has the bigger battery (6800 mAh vs 5500); the Xiaomi 17 Ultra (China) is faster in AnTuTu (3,950,082 vs 1,027,925); the Oppo K12 is noticeably lighter (186g vs 224g).
Profile comparison
Category scores
Oppo K12
Xiaomi 17 Ultra (China)
What makes Oppo K12 better?
- Faster charging: 100W vs 90W
- Lighter: 186g vs 224g
- Better portability (63/100 vs 42/100)
What makes Xiaomi 17 Ultra (China) better?
- Higher AnTuTu: 3950082 vs 1027925
- Better Geekbench Single: 3639 vs 1131
- Better Geekbench Multi: 11047 vs 3111
- Bigger battery: 6800 vs 5500 mAh
- Higher performance (98/100 vs 59/100)
- Better camera (87/100 vs 35/100)
- Longer battery life (83/100 vs 66/100)
- Better display (81/100 vs 80/100)
Comparison verdict
Comparing the Oppo K12 vs the Xiaomi 17 Ultra (China), the Xiaomi 17 Ultra (China) scores 30 points higher (87/100 vs 57/100). In the "performance" category, the Xiaomi 17 Ultra (China) leads (98/100 vs 59/100). In the "camera" category, the Xiaomi 17 Ultra (China) leads (87/100 vs 35/100). In the "battery" category, the Xiaomi 17 Ultra (China) leads (83/100 vs 66/100). In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Oppo K12 (98/100 vs 59/100). In the "display" category, the Xiaomi 17 Ultra (China) and the Oppo K12 are nearly equal (81/100 vs 80/100). In the "camera" category, the Xiaomi 17 Ultra (China) significantly outperforms the Oppo K12 (87/100 vs 35/100). In the "battery" category, the Xiaomi 17 Ultra (China) notably outperforms the Oppo K12 (83/100 vs 66/100). In the "portability" category, the Oppo K12 notably outperforms the Xiaomi 17 Ultra (China) (63/100 vs 42/100).
Specs comparison
| Specification | Oppo K12 | Xiaomi 17 Ultra (China) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7 Gen 3 | Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 1027925 | 3950082 | |
| Geekbench Single | 1131 | 3639 | |
| Geekbench Multi | 3111 | 11047 | |
| Display | 6.7" AMOLED | 6.9" LTPO AMOLED | |
| Resolution | 1080x2412 | 1200x2608 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5500 mAh | 6800 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 50 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 512GB / 1TB | |
| OS | Android 14, ColorOS 14 | Android 16 | |
| Brightness (peak) | 1100 nits | — | |
| NFC | yes | yes | |
| Protection | IP54 | IP68/IP69 | |
| Dimensions | 162.5×75.3×8.4 mm | 162.9×77.6×8.3 mm | |
| Weight | 186 g | 224 g | |
| Launch price | — | $892 |
Camera comparison
Oppo K12
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 17 Ultra (China)
- Main: 50MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Oppo K12
- 6.7" AMOLED
- Resolution: 1080x2412
- Refresh rate: 120 Hz
Xiaomi 17 Ultra (China)
- 6.9" LTPO AMOLED
- Resolution: 1200x2608
- Refresh rate: 120 Hz
Battery and charging
Oppo K12
- 5500 mAh
- Wired: 100W
- No wireless charging
Xiaomi 17 Ultra (China)
- 6800 mAh
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Oppo K12 and Xiaomi 17 Ultra (China), covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra (China) leads Oppo K12 by 74.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo K12
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra (China) significantly outperforms the Oppo K12 (98/100 vs 59/100).
display
In the "display" category, the Xiaomi 17 Ultra (China) and the Oppo K12 are nearly equal (81/100 vs 80/100).
camera
In the "camera" category, the Xiaomi 17 Ultra (China) significantly outperforms the Oppo K12 (87/100 vs 35/100).
battery
In the "battery" category, the Xiaomi 17 Ultra (China) notably outperforms the Oppo K12 (83/100 vs 66/100).
portability
In the "portability" category, the Oppo K12 notably outperforms the Xiaomi 17 Ultra (China) (63/100 vs 42/100).
Frequently asked questions
Which is better: the Oppo K12 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) significantly outperforms the Oppo K12 by 30 points (87/100 vs 57/100).
What is the rating of the Oppo K12 and the Xiaomi 17 Ultra (China)?
The Oppo K12 has a MobileRank rating of 57/100, the Xiaomi 17 Ultra (China) — 87/100.
Which has the better camera: the Oppo K12 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on camera score (87/100 vs 35/100).
Which is more powerful: the Oppo K12 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on performance (98/100 vs 59/100).
Should you choose the Oppo K12 over the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.