Realme C55 vs Redmi K90 Ultra
The Realme C55 (2023) runs on the MediaTek Helio G88, 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 39/100 (a 34-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 64 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 362,744); the Realme C55 is noticeably lighter (189g vs 227g).
Realme C55
Redmi K90 Ultra
- Better main camera: 64MP vs 50MP
- Lighter: 189g vs 227g
- Better portability (66/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 362744
- Better Geekbench Single: 3041 vs 430
- Better Geekbench Multi: 9494 vs 1375
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 33W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 29/100)
- Longer battery life (78/100 vs 46/100)
- Better display (94/100 vs 54/100)
Comparing the Realme C55 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 34 points higher (73/100 vs 39/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 29/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 46/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme C55 (92/100 vs 29/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Realme C55 (94/100 vs 54/100). In the "camera" category, both devices are on the same level — 37/100. In the "battery" category, the Redmi K90 Ultra significantly outperforms the Realme C55 (78/100 vs 46/100). In the "portability" category, the Realme C55 notably outperforms the Redmi K90 Ultra (66/100 vs 40/100).
| Specification | Realme C55 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G88 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 362744 | 3119308 | |
| Geekbench Single | 430 | 3041 | |
| Geekbench Multi | 1375 | 9494 | |
| Display | 6.7" IPS LCD | 6.8" AMOLED | |
| Resolution | 1080x2400 | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 33W | 100W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 4GB / 6GB / 8GB | 12GB / 16GB | |
| Storage | 64GB / 128GB / 256GB | 256GB / 512GB | |
| OS | Android 13, Realme UI 4.0 | Android 16 | |
| Brightness (peak) | 680 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 165.6×75.9×7.9 mm | 162.9×77.9×8.2 mm | |
| Weight | 189 g | 227 g | |
| Launch price | — | $420 |
Realme C55
- Main: 64MP
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Realme C55
- 6.7" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Realme C55
- 5000 mAh
- Wired: 33W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Realme C55 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Realme C55 by 88.4% in our overall performance rating.
Realme C55
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme C55 (92/100 vs 29/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Realme C55 (94/100 vs 54/100).
camera
In the "camera" category, both devices are on the same level — 37/100.
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Realme C55 (78/100 vs 46/100).
portability
In the "portability" category, the Realme C55 notably outperforms the Redmi K90 Ultra (66/100 vs 40/100).
Which is better: the Realme C55 or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Realme C55 by 34 points (73/100 vs 39/100).
What is the rating of the Realme C55 and the Redmi K90 Ultra?
The Realme C55 has a MobileRank rating of 39/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the Realme C55 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 29/100).
Should you choose the Realme C55 over the Redmi K90 Ultra?
The Realme C55 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, budget-conscious buyers.