Redmi 15C vs Redmi K90 Ultra
The Redmi 15C (2026) runs on the MediaTek Helio G85, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $120 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 61/100 vs 26/100 (a 35-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5160); the Redmi K90 Ultra is faster in AnTuTu (2,760,000 vs 346,495); the Redmi 15C is noticeably lighter (200g vs 227g).
Redmi 15C
Redmi K90 Ultra
- Lighter: 200g vs 227g
- Cheaper: $120 vs $420
- Better design/ergonomics (50/100 vs 16/100)
- Better value for money (100/100 vs 81/100)
- Higher AnTuTu: 2760000 vs 346495
- Better Geekbench Single: 3050 vs 420
- Better Geekbench Multi: 9300 vs 1364
- Bigger battery: 8550 vs 5160 mAh
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (65/100 vs 0/100)
- Better camera (32/100 vs 24/100)
- Longer battery life (77/100 vs 40/100)
- Better display (100/100 vs 50/100)
Comparing the Redmi 15C vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 35 points higher (61/100 vs 26/100). In the "performance" category, the Redmi K90 Ultra leads (65/100 vs 0/100). In the "battery" category, the Redmi K90 Ultra leads (77/100 vs 40/100). In the "value for money" category, the Redmi 15C leads (100/100 vs 81/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (65/100 vs 0/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (100/100 vs 50/100). In the "camera" category, the Redmi K90 Ultra is a bit better (32/100 vs 24/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (77/100 vs 40/100). In the "design" category, the Redmi 15C significantly outperforms the Redmi K90 Ultra (50/100 vs 16/100). In the "value for money" category, the Redmi 15C notably outperforms the Redmi K90 Ultra (100/100 vs 81/100).
| Specification | Redmi 15C | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G85 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 346495 | 2760000 | |
| Geekbench Single | 420 | 3050 | |
| Geekbench Multi | 1364 | 9300 | |
| Display | 6.9" IPS LCD | 6.8" AMOLED | |
| Resolution | — | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 5160 mAh | 8550 mAh | |
| Charging | — | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | — | Android 16 | |
| Brightness (peak) | 810 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP64 | IP68/IP69 | |
| Dimensions | 173.2×81.1×8.2 mm | 162.9×77.9×8.2 mm | |
| Weight | 200 g | 227 g | |
| Price | $120 | $420 |
Redmi 15C
- Main: 50MP
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Redmi 15C
- 6.9" IPS LCD
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Redmi 15C
- 5160 mAh
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Redmi 15C and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Redmi 15C by 87.4% in our overall performance rating.
Price difference: $300. Redmi 15C is cheaper by $300.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (65/100 vs 0/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (100/100 vs 50/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (32/100 vs 24/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (77/100 vs 40/100).
design
In the "design" category, the Redmi 15C significantly outperforms the Redmi K90 Ultra (50/100 vs 16/100).
value for money
In the "value for money" category, the Redmi 15C notably outperforms the Redmi K90 Ultra (100/100 vs 81/100).
Which is better: the Redmi 15C or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Redmi 15C by 35 points (61/100 vs 26/100).
What is the rating of the Redmi 15C and the Redmi K90 Ultra?
The Redmi 15C has a MobileRank rating of 26/100, the Redmi K90 Ultra — 61/100.
Which has the better camera: the Redmi 15C or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (32/100 vs 24/100).
Which is more powerful: the Redmi 15C or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (65/100 vs 0/100).
Should you choose the Redmi 15C over the Redmi K90 Ultra?
The Redmi 15C is a better fit for budget-conscious buyers. The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers.