Infinix Zero Ultra vs Redmi K90 Ultra
The Infinix Zero Ultra (2022) runs on the MediaTek Dimensity 920, 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 56/100 (a 17-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4500); the main camera is 200 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 750,481); the Redmi K90 Ultra has NFC for contactless payments, the Infinix Zero Ultra doesn't.
Profile comparison
Category scores
Infinix Zero Ultra
Redmi K90 Ultra
What makes Infinix Zero Ultra better?
- Faster charging: 180W vs 100W
- Better main camera: 200MP vs 50MP
- Lighter: 213g vs 227g
- Better camera (55/100 vs 37/100)
- Better portability (42/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 750481
- Better Geekbench Single: 3013 vs 936
- Better Geekbench Multi: 9287 vs 2318
- Bigger battery: 8550 vs 4500 mAh
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 51/100)
- Longer battery life (78/100 vs 54/100)
- Better display (94/100 vs 79/100)
Comparison verdict
Comparing the Infinix Zero Ultra vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 17 points higher (73/100 vs 56/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 51/100). In the "camera" category, the Infinix Zero Ultra leads (55/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 54/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Infinix Zero Ultra (92/100 vs 51/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Infinix Zero Ultra (94/100 vs 79/100). In the "camera" category, the Infinix Zero Ultra notably outperforms the Redmi K90 Ultra (55/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Infinix Zero Ultra (78/100 vs 54/100). In the "portability" category, the Infinix Zero Ultra and the Redmi K90 Ultra are nearly equal (42/100 vs 40/100).
Specs comparison
| Specification | Infinix Zero Ultra | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 920 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 750481 | 3233695 | |
| Geekbench Single | 936 | 3013 | |
| Geekbench Multi | 2318 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1080x2400 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 4500 mAh | 8550 mAh | |
| Charging | 180W | 100W | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 256GB | 256GB / 512GB | |
| OS | Android 12, XOS 12 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 165.5×74.5×8.8 mm | 162.9×77.9×8.2 mm | |
| Weight | 213 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
Infinix Zero Ultra
- Main: 200MP f/2.0
- Ultrawide: 13MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Infinix Zero Ultra
- 6.8" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Infinix Zero Ultra
- 4500 mAh
- Wired: 180W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Infinix Zero Ultra and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Infinix Zero Ultra by 76.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Infinix Zero Ultra
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Infinix Zero Ultra (92/100 vs 51/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Infinix Zero Ultra (94/100 vs 79/100).
camera
In the "camera" category, the Infinix Zero Ultra notably outperforms the Redmi K90 Ultra (55/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Infinix Zero Ultra (78/100 vs 54/100).
portability
In the "portability" category, the Infinix Zero Ultra and the Redmi K90 Ultra are nearly equal (42/100 vs 40/100).
Frequently asked questions
Which is better: the Infinix Zero Ultra or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the Infinix Zero Ultra — the overall rating gap is 17 points.
What is the rating of the Infinix Zero Ultra and the Redmi K90 Ultra?
The Infinix Zero Ultra has a MobileRank rating of 56/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Infinix Zero Ultra or the Redmi K90 Ultra?
The Infinix Zero Ultra leads on camera score (55/100 vs 37/100).
Which is more powerful: the Infinix Zero Ultra or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 51/100).
Should you choose the Infinix Zero Ultra over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.