Realme 15 vs Redmi K90 Ultra
The Realme 15 (2025) runs on the MediaTek Dimensity 7300+, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $249 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 62/100 (a 11-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 879,714); the Realme 15 is noticeably lighter (185g vs 227g).
Profile comparison
Category scores
Realme 15
Redmi K90 Ultra
What makes Realme 15 better?
- Lighter: 185g vs 227g
- Cheaper at launch: $249 vs $420
- Better camera (44/100 vs 37/100)
- Longer battery life (80/100 vs 78/100)
- Better portability (74/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 879714
- Better Geekbench Single: 3013 vs 1011
- Better Geekbench Multi: 9287 vs 2813
- Bigger battery: 8550 vs 7000 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (92/100 vs 55/100)
- Better display (94/100 vs 89/100)
Comparison verdict
Comparing the Realme 15 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 11 points higher (73/100 vs 62/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 55/100). Value score: Realme 15 — 74/100, 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 15 (92/100 vs 55/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100). In the "camera" category, the Realme 15 is a bit better (44/100 vs 37/100). In the "battery" category, the Realme 15 and the Redmi K90 Ultra are nearly equal (80/100 vs 78/100). In the "portability" category, the Realme 15 significantly outperforms the Redmi K90 Ultra (74/100 vs 40/100).
Specs comparison
| Specification | Realme 15 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 7300+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 879714 | 3233695 | |
| Geekbench Single | 1011 | 3013 | |
| Geekbench Multi | 2813 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 2392x1080 | 1280x2772 | |
| Refresh rate | 144 Hz | 165 Hz | |
| Battery | 7000 mAh | 8550 mAh | |
| Charging | 80W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 50 MP | 20 MP | |
| RAM | 12GB | 12GB / 16GB | |
| Storage | 256GB | 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 | 185 g | 227 g | |
| Launch price | $249 | $420 |
Camera comparison
Realme 15
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 50MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Realme 15
- 6.8" AMOLED
- Resolution: 2392x1080
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Realme 15
- 7000 mAh
- Wired: 80W
- Wireless charging: no data
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Realme 15 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Realme 15 by 72.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $171. Realme 15 was $171 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme 15 (92/100 vs 55/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100).
camera
In the "camera" category, the Realme 15 is a bit better (44/100 vs 37/100).
battery
In the "battery" category, the Realme 15 and the Redmi K90 Ultra are nearly equal (80/100 vs 78/100).
portability
In the "portability" category, the Realme 15 significantly outperforms the Redmi K90 Ultra (74/100 vs 40/100).
Frequently asked questions
Which is better: the Realme 15 or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the Realme 15 — the overall rating gap is 11 points.
What is the rating of the Realme 15 and the Redmi K90 Ultra?
The Realme 15 has a MobileRank rating of 62/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Realme 15 or the Redmi K90 Ultra?
The Realme 15 leads on camera score (44/100 vs 37/100).
Which is more powerful: the Realme 15 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 55/100).
Should you choose the Realme 15 over the Redmi K90 Ultra?
The Realme 15 is a better fit for those who care about battery life. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.