Infinix Note 50x vs Redmi K90 Ultra
The Infinix Note 50x (2025) runs on the Dimensity 7300 Ultimate, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $140 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 48/100 (a 25-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5500); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 879,714); the Redmi K90 Ultra has NFC for contactless payments, the Infinix Note 50x doesn't; the Infinix Note 50x is noticeably lighter (195g vs 227g).
Profile comparison
Category scores
Infinix Note 50x
Redmi K90 Ultra
What makes Infinix Note 50x better?
- Lighter: 195g vs 227g
- Cheaper at launch: $140 vs $420
- Better portability (62/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 879714
- Better Geekbench Single: 3013 vs 1011
- Better Geekbench Multi: 9287 vs 2813
- Bigger battery: 8550 vs 5500 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 55/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 54/100)
- Better display (94/100 vs 55/100)
Comparison verdict
Comparing the Infinix Note 50x vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 25 points higher (73/100 vs 48/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 55/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 54/100). Value score: Infinix Note 50x — 72/100, Redmi K90 Ultra — 72/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Redmi K90 Ultra significantly outperforms the Infinix Note 50x (92/100 vs 55/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Infinix Note 50x (94/100 vs 55/100). 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 notably outperforms the Infinix Note 50x (78/100 vs 54/100). In the "portability" category, the Infinix Note 50x notably outperforms the Redmi K90 Ultra (62/100 vs 40/100).
Specs comparison
| Specification | Infinix Note 50x | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Dimensity 7300 Ultimate | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 879714 | 3233695 | |
| Geekbench Single | 1011 | 3013 | |
| Geekbench Multi | 2813 | 9287 | |
| Display | 6.7" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1600 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 5500 mAh | 8550 mAh | |
| Charging | 45W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | 560 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68/IP69 | |
| Dimensions | 165.4×76.4×8.0 mm | 162.9×77.9×8.2 mm | |
| Weight | 195 g | 227 g | |
| Launch price | $140 | $420 |
Camera comparison
Infinix Note 50x
- Main: 50MP f/1.6
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Infinix Note 50x
- 6.7" IPS LCD
- Resolution: 720x1600
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Infinix Note 50x
- 5500 mAh
- Wired: 45W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Infinix Note 50x and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Infinix Note 50x by 72.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $280. Infinix Note 50x was $280 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Infinix Note 50x (92/100 vs 55/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Infinix Note 50x (94/100 vs 55/100).
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 notably outperforms the Infinix Note 50x (78/100 vs 54/100).
portability
In the "portability" category, the Infinix Note 50x notably outperforms the Redmi K90 Ultra (62/100 vs 40/100).
Frequently asked questions
Which is better: the Infinix Note 50x or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Infinix Note 50x by 25 points (73/100 vs 48/100).
What is the rating of the Infinix Note 50x and the Redmi K90 Ultra?
The Infinix Note 50x has a MobileRank rating of 48/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Infinix Note 50x or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Infinix Note 50x or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 55/100).
Should you choose the Infinix Note 50x over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.