Oppo A9 (2020) vs Redmi K90 Ultra
The Oppo A9 (2020) (2019) runs on the Qualcomm Snapdragon 665, 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 37/100 (a 36-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 48 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 329,457); the Redmi K90 Ultra has NFC for contactless payments, the Oppo A9 (2020) doesn't; the Oppo A9 (2020) is noticeably lighter (195g vs 227g).
Profile comparison
Category scores
Oppo A9 (2020)
Redmi K90 Ultra
What makes Oppo A9 (2020) better?
- Lighter: 195g vs 227g
- Better portability (50/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 329457
- Better Geekbench Single: 3013 vs 321
- Better Geekbench Multi: 9287 vs 1128
- Bigger battery: 8550 vs 5000 mAh
- Better main camera: 50MP vs 48MP
- Higher performance (92/100 vs 24/100)
- Better camera (37/100 vs 34/100)
- Longer battery life (78/100 vs 66/100)
- Better display (94/100 vs 39/100)
Comparison verdict
Comparing the Oppo A9 (2020) vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 36 points higher (73/100 vs 37/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 24/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 66/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Oppo A9 (2020) (92/100 vs 24/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Oppo A9 (2020) (94/100 vs 39/100). In the "camera" category, the Redmi K90 Ultra and the Oppo A9 (2020) are nearly equal (37/100 vs 34/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100). In the "portability" category, the Oppo A9 (2020) is a bit better (50/100 vs 40/100).
Specs comparison
| Specification | Oppo A9 (2020) | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 665 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 329457 | 3233695 | |
| Geekbench Single | 321 | 3013 | |
| Geekbench Multi | 1128 | 9287 | |
| Display | 6.5" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1600 | 1280x2772 | |
| Refresh rate | — | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | — | 100W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 4GB / 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | Android 9.0 (Pie); ColorOS 6.1 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 163.6×75.6×9.1 mm | 162.9×77.9×8.2 mm | |
| Weight | 195 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
Oppo A9 (2020)
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Oppo A9 (2020)
- 6.5" IPS LCD
- Resolution: 720x1600
- Refresh rate: —
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Oppo A9 (2020)
- 5000 mAh
- Wireless charging: no data
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Oppo A9 (2020) and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Oppo A9 (2020) by 89.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo A9 (2020)
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Oppo A9 (2020) (92/100 vs 24/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Oppo A9 (2020) (94/100 vs 39/100).
camera
In the "camera" category, the Redmi K90 Ultra and the Oppo A9 (2020) are nearly equal (37/100 vs 34/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100).
portability
In the "portability" category, the Oppo A9 (2020) is a bit better (50/100 vs 40/100).
Frequently asked questions
Which is better: the Oppo A9 (2020) or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Oppo A9 (2020) by 36 points (73/100 vs 37/100).
What is the rating of the Oppo A9 (2020) and the Redmi K90 Ultra?
The Oppo A9 (2020) has a MobileRank rating of 37/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the Oppo A9 (2020) or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 24/100).
Should you choose the Oppo A9 (2020) over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.