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; launch prices were $120 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 36/100 (a 37-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5160); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 348,562); the Redmi 15C is noticeably lighter (200g vs 227g).
Profile comparison
Category scores
Redmi 15C
Redmi K90 Ultra
What makes Redmi 15C better?
- Lighter: 200g vs 227g
- Cheaper at launch: $120 vs $420
- Better portability (57/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 348562
- Better Geekbench Single: 3013 vs 419
- Better Geekbench Multi: 9287 vs 1461
- Bigger battery: 8550 vs 5160 mAh
- Faster charging: 100W vs 33W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 29/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 49/100)
- Better display (94/100 vs 43/100)
Comparison verdict
Comparing the Redmi 15C vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 37 points higher (73/100 vs 36/100). 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 49/100). Value score: Redmi 15C — 54/100, 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 Redmi 15C (92/100 vs 29/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (94/100 vs 43/100). 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 Redmi 15C (78/100 vs 49/100). In the "portability" category, the Redmi 15C notably outperforms the Redmi K90 Ultra (57/100 vs 40/100).
Specs comparison
| Specification | Redmi 15C | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G85 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 348562 | 3233695 | |
| Geekbench Single | 419 | 3013 | |
| Geekbench Multi | 1461 | 9287 | |
| Display | 6.9" IPS LCD | 6.8" AMOLED | |
| Resolution | 720x1600 | 1280x2772 | |
| Refresh rate | 90 Hz | 165 Hz | |
| Battery | 5160 mAh | 8550 mAh | |
| Charging | 33W | 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 15, up to 2 major Android upgrades, HyperOS 2 | 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 | |
| Launch price | $120 | $420 |
Camera comparison
Redmi 15C
- Main: 50MP f/1.8
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Redmi 15C
- 6.9" IPS LCD
- Resolution: 720x1600
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Redmi 15C
- 5160 mAh
- Wired: 33W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Redmi 15C and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Redmi 15C by 89.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $300. Redmi 15C was $300 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (92/100 vs 29/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Redmi 15C (94/100 vs 43/100).
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 Redmi 15C (78/100 vs 49/100).
portability
In the "portability" category, the Redmi 15C notably outperforms the Redmi K90 Ultra (57/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi 15C or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Redmi 15C by 37 points (73/100 vs 36/100).
What is the rating of the Redmi 15C and the Redmi K90 Ultra?
The Redmi 15C has a MobileRank rating of 36/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Redmi 15C or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Redmi 15C or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 29/100).
Should you choose the Redmi 15C over the Redmi K90 Ultra?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.