Infinix Zero Ultra vs Redmi K90
The Infinix Zero Ultra (2022) runs on the MediaTek Dimensity 920, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 56/100 (a 20-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 4500); the main camera is 200 MP vs 50 MP; the Redmi K90 is faster in AnTuTu (3,077,585 vs 750,481); the Redmi K90 has NFC for contactless payments, the Infinix Zero Ultra doesn't.
Profile comparison
Category scores
Infinix Zero Ultra
Redmi K90
What makes Infinix Zero Ultra better?
- Faster charging: 180W vs 100W
- Better main camera: 200MP vs 50MP
- Overall rating 56/100
What makes Redmi K90 better?
- Higher AnTuTu: 3077585 vs 750481
- Better Geekbench Single: 3013 vs 936
- Better Geekbench Multi: 9287 vs 2318
- Bigger battery: 7100 vs 4500 mAh
- Lighter: 206g vs 213g
- Higher performance (91/100 vs 51/100)
- Better camera (58/100 vs 55/100)
- Longer battery life (72/100 vs 54/100)
- Better display (82/100 vs 79/100)
- Better portability (55/100 vs 42/100)
Comparison verdict
Comparing the Infinix Zero Ultra vs the Redmi K90, the Redmi K90 scores 20 points higher (76/100 vs 56/100). In the "performance" category, the Redmi K90 leads (91/100 vs 51/100). In the "battery" category, the Redmi K90 leads (72/100 vs 54/100). In the "performance" category, the Redmi K90 significantly outperforms the Infinix Zero Ultra (91/100 vs 51/100). In the "display" category, the Redmi K90 and the Infinix Zero Ultra are nearly equal (82/100 vs 79/100). In the "camera" category, the Redmi K90 and the Infinix Zero Ultra are nearly equal (58/100 vs 55/100). In the "battery" category, the Redmi K90 notably outperforms the Infinix Zero Ultra (72/100 vs 54/100). In the "portability" category, the Redmi K90 is a bit better (55/100 vs 42/100).
Specs comparison
| Specification | Infinix Zero Ultra | Redmi K90 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 920 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 750481 | 3077585 | |
| Geekbench Single | 936 | 3013 | |
| Geekbench Multi | 2318 | 9287 | |
| Display | 6.8" AMOLED | 6.6" AMOLED | |
| Resolution | 1080x2400 | 2510x1156 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4500 mAh | 7100 mAh | |
| Charging | 180W | 100W | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Telephoto | 0 MP | 50 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 | |
| Dimensions | 165.5×74.5×8.8 mm | 157.5×75.3×8.0 mm | |
| Weight | 213 g | 206 g | |
| Launch price | — | $401 |
Camera comparison
Infinix Zero Ultra
- Main: 200MP f/2.0
- Ultrawide: 13MP
- Front: 32MP
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
Infinix Zero Ultra
- 6.8" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Battery and charging
Infinix Zero Ultra
- 4500 mAh
- Wired: 180W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Infinix Zero Ultra and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Infinix Zero Ultra by 75.6% 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 significantly outperforms the Infinix Zero Ultra (91/100 vs 51/100).
display
In the "display" category, the Redmi K90 and the Infinix Zero Ultra are nearly equal (82/100 vs 79/100).
camera
In the "camera" category, the Redmi K90 and the Infinix Zero Ultra are nearly equal (58/100 vs 55/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Infinix Zero Ultra (72/100 vs 54/100).
portability
In the "portability" category, the Redmi K90 is a bit better (55/100 vs 42/100).
Frequently asked questions
Which is better: the Infinix Zero Ultra or the Redmi K90?
The Redmi K90 significantly outperforms the Infinix Zero Ultra by 20 points (76/100 vs 56/100).
What is the rating of the Infinix Zero Ultra and the Redmi K90?
The Infinix Zero Ultra has a MobileRank rating of 56/100, the Redmi K90 — 76/100.
Which is more powerful: the Infinix Zero Ultra or the Redmi K90?
The Redmi K90 leads on performance (91/100 vs 51/100).
Should you choose the Infinix Zero Ultra over the Redmi K90?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.