Realme C85 4G vs Redmi K90 Ultra
The Realme C85 4G (2026) runs on the Snapdragon 685, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $145 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 42/100 (a 31-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 7000); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 476,175).
Profile comparison
Category scores
Realme C85 4G
Redmi K90 Ultra
What makes Realme C85 4G better?
- Lighter: 215g vs 227g
- Cheaper at launch: $145 vs $420
- Better portability (45/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 476175
- Better Geekbench Single: 3013 vs 466
- Better Geekbench Multi: 9287 vs 1396
- Bigger battery: 8550 vs 7000 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (92/100 vs 34/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 60/100)
- Better display (94/100 vs 65/100)
Comparison verdict
Comparing the Realme C85 4G vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 31 points higher (73/100 vs 42/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 34/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 60/100). Value score: Realme C85 4G — 60/100, 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 Realme C85 4G (92/100 vs 34/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Realme C85 4G (94/100 vs 65/100). 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 C85 4G (78/100 vs 60/100). In the "portability" category, the Realme C85 4G is a bit better (45/100 vs 40/100).
Specs comparison
| Specification | Realme C85 4G | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Snapdragon 685 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 476175 | 3233695 | |
| Geekbench Single | 466 | 3013 | |
| Geekbench Multi | 1396 | 9287 | |
| Display | 6.8" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1570 | 1280x2772 | |
| Refresh rate | 144 Hz | 165 Hz | |
| Battery | 7000 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) | 1200 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68/IP69 | |
| Dimensions | 166.2×78.0×8.4 mm | 162.9×77.9×8.2 mm | |
| Weight | 215 g | 227 g | |
| Launch price | $145 | $420 |
Camera comparison
Realme C85 4G
- Main: 50MP f/1.8
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Realme C85 4G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Realme C85 4G
- 7000 mAh
- Wired: 45W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Realme C85 4G and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Realme C85 4G by 85.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $275. Realme C85 4G was $275 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme C85 4G (92/100 vs 34/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Realme C85 4G (94/100 vs 65/100).
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 C85 4G (78/100 vs 60/100).
portability
In the "portability" category, the Realme C85 4G is a bit better (45/100 vs 40/100).
Frequently asked questions
Which is better: the Realme C85 4G or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Realme C85 4G by 31 points (73/100 vs 42/100).
What is the rating of the Realme C85 4G and the Redmi K90 Ultra?
The Realme C85 4G has a MobileRank rating of 42/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Realme C85 4G or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Realme C85 4G or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 34/100).
Should you choose the Realme C85 4G over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.