Redmi K90 Ultra vs Vivo Y77 (China)
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y77 (China) (2022) runs on the MediaTek Dimensity 930. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 45/100 (a 28-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4500); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 593,307); the Redmi K90 Ultra has NFC for contactless payments, the Vivo Y77 (China) doesn't; the Vivo Y77 (China) is noticeably lighter (194g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Vivo Y77 (China)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 593307
- Better Geekbench Single: 3013 vs 915
- Better Geekbench Multi: 9287 vs 2299
- Bigger battery: 8550 vs 4500 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 47/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 45/100)
- Better display (94/100 vs 66/100)
What makes Vivo Y77 (China) better?
- Lighter: 194g vs 227g
- Better portability (56/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo Y77 (China), the Redmi K90 Ultra scores 28 points higher (73/100 vs 45/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 47/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 45/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y77 (China) (92/100 vs 47/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Vivo Y77 (China) (94/100 vs 66/100). 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 Vivo Y77 (China) (78/100 vs 45/100). In the "portability" category, the Vivo Y77 (China) notably outperforms the Redmi K90 Ultra (56/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo Y77 (China) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Dimensity 930 | |
| AnTuTu | 3233695 | 593307 | |
| Geekbench Single | 3013 | 915 | |
| Geekbench Multi | 9287 | 2299 | |
| Display | 6.8" AMOLED | 6.6" IPS LCD | |
| Resolution | 1280x2772 | 1080x2388 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 4500 mAh | |
| Charging | 100W | 80W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB / 12GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 12, Origin OS Ocean | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 164.2×75.8×8.6 mm | |
| Weight | 227 g | 194 g | |
| Launch price | $420 | — |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo Y77 (China)
- Main: 50MP f/1.8
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo Y77 (China)
- 6.6" IPS LCD
- Resolution: 1080x2388
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo Y77 (China)
- 4500 mAh
- Wired: 80W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Vivo Y77 (China), covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo Y77 (China) by 445.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo Y77 (China)
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y77 (China) (92/100 vs 47/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Vivo Y77 (China) (94/100 vs 66/100).
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 Vivo Y77 (China) (78/100 vs 45/100).
portability
In the "portability" category, the Vivo Y77 (China) notably outperforms the Redmi K90 Ultra (56/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo Y77 (China)?
The Redmi K90 Ultra significantly outperforms the Vivo Y77 (China) by 28 points (73/100 vs 45/100).
What is the rating of the Redmi K90 Ultra and the Vivo Y77 (China)?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo Y77 (China) — 45/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo Y77 (China)?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo Y77 (China)?
The Redmi K90 Ultra leads on performance (92/100 vs 47/100).
Should you choose the Redmi K90 Ultra over the Vivo Y77 (China)?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.