Realme C83 5G vs Redmi K90 Ultra
The Realme C83 5G (2026) runs on the MediaTek Dimensity 6400, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $130 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 47/100 (a 26-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6000); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 550,018); the Realme C83 5G is noticeably lighter (198g vs 227g).
Realme C83 5G
Redmi K90 Ultra
- Lighter: 198g vs 227g
- Cheaper: $130 vs $420
- Better portability (61/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 550018
- Better Geekbench Single: 3041 vs 803
- Better Geekbench Multi: 9494 vs 2047
- Bigger battery: 8550 vs 6000 mAh
- Faster charging: 100W vs 15W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 44/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 60/100)
- Better display (94/100 vs 66/100)
Comparing the Realme C83 5G vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 26 points higher (73/100 vs 47/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 44/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 60/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme C83 5G (92/100 vs 44/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Realme C83 5G (94/100 vs 66/100). 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 Realme C83 5G (78/100 vs 60/100). In the "portability" category, the Realme C83 5G notably outperforms the Redmi K90 Ultra (61/100 vs 40/100).
| Specification | Realme C83 5G | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 6400 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 550018 | 3119308 | |
| Geekbench Single | 803 | 3041 | |
| Geekbench Multi | 2047 | 9494 | |
| Display | 6.7" IPS LCD | 6.8" AMOLED | |
| Resolution | 2400x1080 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6000 mAh | 8550 mAh | |
| Charging | 15W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | — | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | — | 162.9×77.9×8.2 mm | |
| Weight | 198 g | 227 g | |
| Price | $130 | $420 |
Realme C83 5G
- Main: 50MP f/1.8
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Realme C83 5G
- 6.7" IPS LCD
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Realme C83 5G
- 6000 mAh
- Wired: 15W
- Wireless charging: no data
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Realme C83 5G and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Realme C83 5G by 82.4% in our overall performance rating.
Price difference: $290. Realme C83 5G is cheaper by $290.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme C83 5G (92/100 vs 44/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Realme C83 5G (94/100 vs 66/100).
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 Realme C83 5G (78/100 vs 60/100).
portability
In the "portability" category, the Realme C83 5G notably outperforms the Redmi K90 Ultra (61/100 vs 40/100).
Which is better: the Realme C83 5G or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Realme C83 5G by 26 points (73/100 vs 47/100).
What is the rating of the Realme C83 5G and the Redmi K90 Ultra?
The Realme C83 5G has a MobileRank rating of 47/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Realme C83 5G or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Realme C83 5G or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 44/100).
Should you choose the Realme C83 5G over the Redmi K90 Ultra?
The Realme C83 5G is a better fit for everyday use. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.