Oppo A1x vs Redmi K90 Ultra
The Oppo A1x (2023) runs on the MediaTek Dimensity 700, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 34/100 (a 39-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 13 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 515,647); the Redmi K90 Ultra has NFC for contactless payments, the Oppo A1x doesn't; the Oppo A1x is noticeably lighter (186g vs 227g).
Profile comparison
Category scores
Oppo A1x
Redmi K90 Ultra
What makes Oppo A1x better?
- Lighter: 186g vs 227g
- Better portability (67/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 515647
- Better Geekbench Single: 3013 vs 690
- Better Geekbench Multi: 9287 vs 1736
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 10W
- Better main camera: 50MP vs 13MP
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 40/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (78/100 vs 43/100)
- Better display (94/100 vs 44/100)
Comparison verdict
Comparing the Oppo A1x vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 39 points higher (73/100 vs 34/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 40/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 43/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Oppo A1x (92/100 vs 40/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Oppo A1x (94/100 vs 44/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Oppo A1x (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Oppo A1x (78/100 vs 43/100). In the "portability" category, the Oppo A1x notably outperforms the Redmi K90 Ultra (67/100 vs 40/100).
Specs comparison
| Specification | Oppo A1x | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 700 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 515647 | 3233695 | |
| Geekbench Single | 690 | 3013 | |
| Geekbench Multi | 1736 | 9287 | |
| Display | 6.6" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1612 | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 10W | 100W | |
| Main camera | 13 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | Android 12, ColorOS 12.1 | Android 16 | |
| Brightness (peak) | 600 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP54 | IP68/IP69 | |
| Dimensions | 163.8×75.1×8.0 mm | 162.9×77.9×8.2 mm | |
| Weight | 186 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
Oppo A1x
- Main: 13MP f/2.2
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Oppo A1x
- 6.6" IPS LCD
- Resolution: 720x1612
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Oppo A1x
- 5000 mAh
- Wired: 10W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Oppo A1x and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Oppo A1x by 84.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo A1x
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Oppo A1x (92/100 vs 40/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Oppo A1x (94/100 vs 44/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Oppo A1x (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Oppo A1x (78/100 vs 43/100).
portability
In the "portability" category, the Oppo A1x notably outperforms the Redmi K90 Ultra (67/100 vs 40/100).
Frequently asked questions
Which is better: the Oppo A1x or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Oppo A1x by 39 points (73/100 vs 34/100).
What is the rating of the Oppo A1x and the Redmi K90 Ultra?
The Oppo A1x has a MobileRank rating of 34/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Oppo A1x or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Oppo A1x or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 40/100).
Should you choose the Oppo A1x over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.