Infinix Smart 9 vs Redmi K90
The Infinix Smart 9 (2024) runs on the MediaTek Helio G81, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 32/100 (a 44-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5000); the main camera is 13 MP vs 50 MP; the Redmi K90 is faster in AnTuTu (3,126,494 vs 358,608); the Redmi K90 has NFC for contactless payments, the Infinix Smart 9 doesn't; the Infinix Smart 9 is noticeably lighter (188g vs 206g).
Profile comparison
Category scores
Infinix Smart 9
Redmi K90
What makes Infinix Smart 9 better?
- Lighter: 188g vs 206g
- Better portability (62/100 vs 55/100)
What makes Redmi K90 better?
- Higher AnTuTu: 3126494 vs 358608
- Better Geekbench Single: 3013 vs 432
- Better Geekbench Multi: 9287 vs 1416
- Bigger battery: 7100 vs 5000 mAh
- Faster charging: 100W vs 10W
- Better main camera: 50MP vs 13MP
- Higher performance (91/100 vs 30/100)
- Better camera (58/100 vs 10/100)
- Longer battery life (72/100 vs 43/100)
- Better display (82/100 vs 55/100)
Comparison verdict
Comparing the Infinix Smart 9 vs the Redmi K90, the Redmi K90 scores 44 points higher (76/100 vs 32/100). In the "performance" category, the Redmi K90 leads (91/100 vs 30/100). In the "camera" category, the Redmi K90 leads (58/100 vs 10/100). In the "battery" category, the Redmi K90 leads (72/100 vs 43/100). In the "performance" category, the Redmi K90 significantly outperforms the Infinix Smart 9 (91/100 vs 30/100). In the "display" category, the Redmi K90 notably outperforms the Infinix Smart 9 (82/100 vs 55/100). In the "camera" category, the Redmi K90 significantly outperforms the Infinix Smart 9 (58/100 vs 10/100). In the "battery" category, the Redmi K90 notably outperforms the Infinix Smart 9 (72/100 vs 43/100). In the "portability" category, the Infinix Smart 9 is a bit better (62/100 vs 55/100).
Specs comparison
| Specification | Infinix Smart 9 | Redmi K90 | |
|---|---|---|---|
| Processor | MediaTek Helio G81 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 358608 | 3126494 | |
| Geekbench Single | 432 | 3013 | |
| Geekbench Multi | 1416 | 9287 | |
| Display | 6.7" IPS LCD | 6.6" AMOLED | |
| Resolution | 720x1600 | 2510x1156 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5000 mAh | 7100 mAh | |
| Charging | 10W | 100W | |
| Main camera | 13 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 3GB / 4GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB | |
| OS | Android 14 (Go edition), XOS 14 | Android 16 | |
| Brightness (peak) | 500 nits | 3500 nits | |
| NFC | no | yes | |
| Protection | IP54 | IP68 | |
| Dimensions | 165.7×77.1×8.4 mm | 157.5×75.3×8.0 mm | |
| Weight | 188 g | 206 g | |
| Launch price | — | $401 |
Camera comparison
Infinix Smart 9
- Main: 13MP f/1.9
- Front: 8MP
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
Infinix Smart 9
- 6.7" IPS LCD
- Resolution: 720x1600
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Battery and charging
Infinix Smart 9
- 5000 mAh
- Wired: 10W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Infinix Smart 9 and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads Infinix Smart 9 by 88.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Infinix Smart 9
Price unknownDetailed category analysis
performance
In the "performance" category, the Redmi K90 significantly outperforms the Infinix Smart 9 (91/100 vs 30/100).
display
In the "display" category, the Redmi K90 notably outperforms the Infinix Smart 9 (82/100 vs 55/100).
camera
In the "camera" category, the Redmi K90 significantly outperforms the Infinix Smart 9 (58/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Infinix Smart 9 (72/100 vs 43/100).
portability
In the "portability" category, the Infinix Smart 9 is a bit better (62/100 vs 55/100).
Frequently asked questions
Which is better: the Infinix Smart 9 or the Redmi K90?
The Redmi K90 significantly outperforms the Infinix Smart 9 by 44 points (76/100 vs 32/100).
What is the rating of the Infinix Smart 9 and the Redmi K90?
The Infinix Smart 9 has a MobileRank rating of 32/100, the Redmi K90 — 76/100.
Which has the better camera: the Infinix Smart 9 or the Redmi K90?
The Redmi K90 leads on camera score (58/100 vs 10/100).
Which is more powerful: the Infinix Smart 9 or the Redmi K90?
The Redmi K90 leads on performance (91/100 vs 30/100).
Should you choose the Infinix Smart 9 over the Redmi K90?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.