Oppo K12x vs Xiaomi 17 Ultra
The Oppo K12x (2024) runs on the Qualcomm Snapdragon 695 5G, while the Xiaomi 17 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Xiaomi 17 Ultra leads — 89/100 vs 51/100 (a 38-point difference). Key differences: the Xiaomi 17 Ultra has the bigger battery (6000 mAh vs 5500); the Xiaomi 17 Ultra is faster in AnTuTu (3,667,711 vs 592,015); the Xiaomi 17 Ultra has NFC for contactless payments, the Oppo K12x doesn't; the Oppo K12x is noticeably lighter (191g vs 226g).
Profile comparison
Category scores
Oppo K12x
Xiaomi 17 Ultra
What makes Oppo K12x better?
- Lighter: 191g vs 226g
- Better portability (63/100 vs 40/100)
What makes Xiaomi 17 Ultra better?
- Higher AnTuTu: 3667711 vs 592015
- Better Geekbench Single: 3639 vs 905
- Better Geekbench Multi: 11047 vs 2101
- Bigger battery: 6000 vs 5500 mAh
- Faster charging: 90W vs 80W
- Higher performance (97/100 vs 46/100)
- Better camera (93/100 vs 32/100)
- Longer battery life (80/100 vs 62/100)
- Better display (89/100 vs 79/100)
Comparison verdict
Comparing the Oppo K12x vs the Xiaomi 17 Ultra, the Xiaomi 17 Ultra scores 38 points higher (89/100 vs 51/100). In the "performance" category, the Xiaomi 17 Ultra leads (97/100 vs 46/100). In the "camera" category, the Xiaomi 17 Ultra leads (93/100 vs 32/100). In the "battery" category, the Xiaomi 17 Ultra leads (80/100 vs 62/100). In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Oppo K12x (97/100 vs 46/100). In the "display" category, the Xiaomi 17 Ultra is a bit better (89/100 vs 79/100). In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Oppo K12x (93/100 vs 32/100). In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Oppo K12x (80/100 vs 62/100). In the "portability" category, the Oppo K12x notably outperforms the Xiaomi 17 Ultra (63/100 vs 40/100).
Specs comparison
| Specification | Oppo K12x | Xiaomi 17 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 695 5G | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 592015 | 3667711 | |
| Geekbench Single | 905 | 3639 | |
| Geekbench Multi | 2101 | 11047 | |
| Display | 6.7" OLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x2400 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5500 mAh | 6000 mAh | |
| Charging | 80W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 166 | |
| Main camera | 50 MP | 50 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 | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 162.9×75.6×8.1 mm | 162.9×77.6×8.3 mm | |
| Weight | 191 g | 226 g | |
| Launch price | — | $999 |
Camera comparison
Oppo K12x
- Main: 50MP f/1.8
- Front: 16MP
Xiaomi 17 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
Oppo K12x
- 6.7" OLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Xiaomi 17 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Oppo K12x
- 5500 mAh
- Wired: 80W
- No wireless charging
Xiaomi 17 Ultra
- 6000 mAh
- NanoReview test: web browsing 16:09 hrs, total 33:23 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Oppo K12x and Xiaomi 17 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra leads Oppo K12x by 83.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo K12x
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra significantly outperforms the Oppo K12x (97/100 vs 46/100).
display
In the "display" category, the Xiaomi 17 Ultra is a bit better (89/100 vs 79/100).
camera
In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Oppo K12x (93/100 vs 32/100).
battery
In the "battery" category, the Xiaomi 17 Ultra notably outperforms the Oppo K12x (80/100 vs 62/100).
portability
In the "portability" category, the Oppo K12x notably outperforms the Xiaomi 17 Ultra (63/100 vs 40/100).
Frequently asked questions
Which is better: the Oppo K12x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra significantly outperforms the Oppo K12x by 38 points (89/100 vs 51/100).
What is the rating of the Oppo K12x and the Xiaomi 17 Ultra?
The Oppo K12x has a MobileRank rating of 51/100, the Xiaomi 17 Ultra — 89/100.
Which has the better camera: the Oppo K12x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on camera score (93/100 vs 32/100).
Which is more powerful: the Oppo K12x or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on performance (97/100 vs 46/100).
Should you choose the Oppo K12x over the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.