Huawei Mate 90 RS Ultimate vs Oppo K12x (China)
The Huawei Mate 90 RS Ultimate (2026) runs on the Kirin 9050 Pro, while the Oppo K12x (China) (2024) runs on the Qualcomm Snapdragon 695 5G. By overall MobileRank rating, the Huawei Mate 90 RS Ultimate leads — 75/100 vs 51/100 (a 24-point difference). Key differences: the Huawei Mate 90 RS Ultimate has the bigger battery (6800 mAh vs 5500); the Huawei Mate 90 RS Ultimate is faster in AnTuTu (1,902,468 vs 592,015); the Huawei Mate 90 RS Ultimate has NFC for contactless payments, the Oppo K12x (China) doesn't; the Oppo K12x (China) is noticeably lighter (191g vs 248g).
Profile comparison
Category scores
Huawei Mate 90 RS Ultimate
Oppo K12x (China)
What makes Huawei Mate 90 RS Ultimate better?
- Higher AnTuTu: 1902468 vs 592015
- Better Geekbench Single: 1636 vs 905
- Better Geekbench Multi: 5775 vs 2101
- Bigger battery: 6800 vs 5500 mAh
- Faster charging: 100W vs 80W
- Higher performance (75/100 vs 46/100)
- Better camera (74/100 vs 32/100)
- Longer battery life (86/100 vs 62/100)
- Better display (84/100 vs 79/100)
What makes Oppo K12x (China) better?
- Lighter: 191g vs 248g
- Better portability (63/100 vs 31/100)
Comparison verdict
Comparing the Huawei Mate 90 RS Ultimate vs the Oppo K12x (China), the Huawei Mate 90 RS Ultimate scores 24 points higher (75/100 vs 51/100). In the "performance" category, the Huawei Mate 90 RS Ultimate leads (75/100 vs 46/100). In the "camera" category, the Huawei Mate 90 RS Ultimate leads (74/100 vs 32/100). In the "battery" category, the Huawei Mate 90 RS Ultimate leads (86/100 vs 62/100). In the "performance" category, the Huawei Mate 90 RS Ultimate notably outperforms the Oppo K12x (China) (75/100 vs 46/100). In the "display" category, the Huawei Mate 90 RS Ultimate is a bit better (84/100 vs 79/100). In the "camera" category, the Huawei Mate 90 RS Ultimate significantly outperforms the Oppo K12x (China) (74/100 vs 32/100). In the "battery" category, the Huawei Mate 90 RS Ultimate notably outperforms the Oppo K12x (China) (86/100 vs 62/100). In the "portability" category, the Oppo K12x (China) significantly outperforms the Huawei Mate 90 RS Ultimate (63/100 vs 31/100).
Specs comparison
| Specification | Huawei Mate 90 RS Ultimate | Oppo K12x (China) | |
|---|---|---|---|
| Processor | Kirin 9050 Pro | Qualcomm Snapdragon 695 5G | |
| AnTuTu | 1902468 | 592015 | |
| Geekbench Single | 1636 | 905 | |
| Geekbench Multi | 5775 | 2101 | |
| Display | 6.9" Dual-layer LTPO OLED | 6.7" OLED | |
| Resolution | 1320x2848 | 1080x2400 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6800 mAh | 5500 mAh | |
| Charging | 100W | 80W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 40 MP | 0 MP | |
| Telephoto | 200 MP | 0 MP | |
| Front camera | 13 MP | 16 MP | |
| RAM | 16GB | 8GB / 12GB | |
| Storage | 512GB / 1TB / 2TB | 128GB / 256GB / 512GB | |
| OS | HarmonyOS 7.0 | Android 14, ColorOS 14 | |
| Brightness (peak) | 12000 nits | 2100 nits | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 164.5×78.7×8.4 mm | 162.9×75.6×8.1 mm | |
| Weight | 248 g | 191 g | |
| Launch price | — | — |
Camera comparison
Huawei Mate 90 RS Ultimate
- Main: 50MP f/1.4
- Ultrawide: 40MP
- Telephoto: 200MP
- Front: 13MP
Oppo K12x (China)
- Main: 50MP f/1.8
- Front: 16MP
Display comparison
Huawei Mate 90 RS Ultimate
- 6.9" Dual-layer LTPO OLED
- Resolution: 1320x2848
- Refresh rate: 120 Hz
Oppo K12x (China)
- 6.7" OLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Battery and charging
Huawei Mate 90 RS Ultimate
- 6800 mAh
- Wired: 100W
- Wireless: 50W
Oppo K12x (China)
- 5500 mAh
- Wired: 80W
- No wireless charging
Overall performance score
We compared Huawei Mate 90 RS Ultimate and Oppo K12x (China), covering their specs and all relevant benchmarks.
Huawei Mate 90 RS Ultimate leads Oppo K12x (China) by 221.4% in our overall performance rating.
Benchmarks
Detailed category analysis
performance
In the "performance" category, the Huawei Mate 90 RS Ultimate notably outperforms the Oppo K12x (China) (75/100 vs 46/100).
display
In the "display" category, the Huawei Mate 90 RS Ultimate is a bit better (84/100 vs 79/100).
camera
In the "camera" category, the Huawei Mate 90 RS Ultimate significantly outperforms the Oppo K12x (China) (74/100 vs 32/100).
battery
In the "battery" category, the Huawei Mate 90 RS Ultimate notably outperforms the Oppo K12x (China) (86/100 vs 62/100).
portability
In the "portability" category, the Oppo K12x (China) significantly outperforms the Huawei Mate 90 RS Ultimate (63/100 vs 31/100).
Frequently asked questions
Which is better: the Huawei Mate 90 RS Ultimate or the Oppo K12x (China)?
The Huawei Mate 90 RS Ultimate significantly outperforms the Oppo K12x (China) by 24 points (75/100 vs 51/100).
What is the rating of the Huawei Mate 90 RS Ultimate and the Oppo K12x (China)?
The Huawei Mate 90 RS Ultimate has a MobileRank rating of 75/100, the Oppo K12x (China) — 51/100.
Which has the better camera: the Huawei Mate 90 RS Ultimate or the Oppo K12x (China)?
The Huawei Mate 90 RS Ultimate leads on camera score (74/100 vs 32/100).
Which is more powerful: the Huawei Mate 90 RS Ultimate or the Oppo K12x (China)?
The Huawei Mate 90 RS Ultimate leads on performance (75/100 vs 46/100).
Should you choose the Huawei Mate 90 RS Ultimate over the Oppo K12x (China)?
The Huawei Mate 90 RS Ultimate is a better fit for active users, those who care about battery life.