Oppo A77s vs Redmi K90 Ultra
The Oppo A77s (2022) runs on the Qualcomm Snapdragon 680 4G, 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 Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 424,216); the Oppo A77s is noticeably lighter (187g vs 227g).
Profile comparison
Category scores
Oppo A77s
Redmi K90 Ultra
What makes Oppo A77s better?
- Lighter: 187g vs 227g
- Better portability (67/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 424216
- Better Geekbench Single: 3013 vs 412
- Better Geekbench Multi: 9287 vs 1423
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 33W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 31/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 46/100)
- Better display (94/100 vs 44/100)
Comparison verdict
Comparing the Oppo A77s 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 31/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 46/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Oppo A77s (92/100 vs 31/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Oppo A77s (94/100 vs 44/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 30/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Oppo A77s (78/100 vs 46/100). In the "portability" category, the Oppo A77s notably outperforms the Redmi K90 Ultra (67/100 vs 40/100).
Specs comparison
| Specification | Oppo A77s | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 680 4G | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 424216 | 3233695 | |
| Geekbench Single | 412 | 3013 | |
| Geekbench Multi | 1423 | 9287 | |
| Display | 6.6" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1612 | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 33W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | Android 12, ColorOS 12.1 | Android 16 | |
| Brightness (peak) | 600 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP54 | IP68/IP69 | |
| Dimensions | 163.8×75.0×8.0 mm | 162.9×77.9×8.2 mm | |
| Weight | 187 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
Oppo A77s
- Main: 50MP f/1.8
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Oppo A77s
- 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 A77s
- 5000 mAh
- Wired: 33W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Oppo A77s and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Oppo A77s by 86.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Oppo A77s
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Oppo A77s (92/100 vs 31/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Oppo A77s (94/100 vs 44/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 30/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Oppo A77s (78/100 vs 46/100).
portability
In the "portability" category, the Oppo A77s notably outperforms the Redmi K90 Ultra (67/100 vs 40/100).
Frequently asked questions
Which is better: the Oppo A77s or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Oppo A77s by 36 points (73/100 vs 37/100).
What is the rating of the Oppo A77s and the Redmi K90 Ultra?
The Oppo A77s has a MobileRank rating of 37/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Oppo A77s or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Oppo A77s or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 31/100).
Should you choose the Oppo A77s over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.