Infinix Smart 8 Plus vs Redmi K90 Ultra
The Infinix Smart 8 Plus (2024) runs on the MediaTek Helio G36, 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 29/100 (a 44-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6000); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 193,858); the Redmi K90 Ultra has NFC for contactless payments, the Infinix Smart 8 Plus doesn't; the Infinix Smart 8 Plus is noticeably lighter (204g vs 227g).
Profile comparison
Category scores
Infinix Smart 8 Plus
Redmi K90 Ultra
What makes Infinix Smart 8 Plus better?
- Lighter: 204g vs 227g
- Better portability (46/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 193858
- Better Geekbench Single: 3013 vs 189
- Better Geekbench Multi: 9287 vs 781
- Bigger battery: 8550 vs 6000 mAh
- Faster charging: 100W vs 18W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 11/100)
- Longer battery life (78/100 vs 51/100)
- Better display (94/100 vs 44/100)
Comparison verdict
Comparing the Infinix Smart 8 Plus vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 44 points higher (73/100 vs 29/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 11/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 51/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Infinix Smart 8 Plus (92/100 vs 11/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Infinix Smart 8 Plus (94/100 vs 44/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Infinix Smart 8 Plus (78/100 vs 51/100). In the "portability" category, the Infinix Smart 8 Plus is a bit better (46/100 vs 40/100).
Specs comparison
| Specification | Infinix Smart 8 Plus | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G36 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 193858 | 3233695 | |
| Geekbench Single | 189 | 3013 | |
| Geekbench Multi | 781 | 9287 | |
| Display | 6.6" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1612 | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 6000 mAh | 8550 mAh | |
| Charging | 18W | 100W | |
| Main camera | — | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 4GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB | |
| OS | Android 13 (Go edition), XOS 13 | Android 16 | |
| Brightness (peak) | 500 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 163.7×75.7×9.0 mm | 162.9×77.9×8.2 mm | |
| Weight | 204 g | 227 g | |
| Launch price | — | $420 |
Camera comparison
Infinix Smart 8 Plus
- Main: —
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Infinix Smart 8 Plus
- 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
Infinix Smart 8 Plus
- 6000 mAh
- Wired: 18W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Infinix Smart 8 Plus and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Infinix Smart 8 Plus by 94.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Infinix Smart 8 Plus
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Infinix Smart 8 Plus (92/100 vs 11/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Infinix Smart 8 Plus (94/100 vs 44/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Infinix Smart 8 Plus (78/100 vs 51/100).
portability
In the "portability" category, the Infinix Smart 8 Plus is a bit better (46/100 vs 40/100).
Frequently asked questions
Which is better: the Infinix Smart 8 Plus or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Infinix Smart 8 Plus by 44 points (73/100 vs 29/100).
What is the rating of the Infinix Smart 8 Plus and the Redmi K90 Ultra?
The Infinix Smart 8 Plus has a MobileRank rating of 29/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the Infinix Smart 8 Plus or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 11/100).
Should you choose the Infinix Smart 8 Plus over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.