Redmi K90 Ultra vs Redmi Note 15
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi Note 15 (2026) runs on the Qualcomm Snapdragon 6 Gen 3; launch prices were $420 and $229. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 57/100 (a 16-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5520); the main camera is 50 MP vs 108 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 822,983); the Redmi Note 15 is noticeably lighter (178g vs 227g).
Redmi K90 Ultra
Redmi Note 15
- Higher AnTuTu: 3233695 vs 822983
- Better Geekbench Single: 3041 vs 1015
- Better Geekbench Multi: 9494 vs 2920
- Bigger battery: 8550 vs 5520 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 55/100)
- Longer battery life (78/100 vs 54/100)
- Better display (94/100 vs 79/100)
- Better main camera: 108MP vs 50MP
- Lighter: 178g vs 227g
- Cheaper at launch: $229 vs $420
- Better camera (46/100 vs 37/100)
- Better portability (79/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Redmi Note 15, the Redmi K90 Ultra scores 16 points higher (73/100 vs 57/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 55/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 54/100). Value score: Redmi K90 Ultra — 82/100, Redmi Note 15 — 72/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi Note 15 (92/100 vs 55/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Redmi Note 15 (94/100 vs 79/100). In the "camera" category, the Redmi Note 15 is a bit better (46/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Redmi Note 15 (78/100 vs 54/100). In the "portability" category, the Redmi Note 15 significantly outperforms the Redmi K90 Ultra (79/100 vs 40/100).
| Specification | Redmi K90 Ultra | Redmi Note 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 6 Gen 3 | |
| AnTuTu | 3233695 | 822983 | |
| Geekbench Single | 3041 | 1015 | |
| Geekbench Multi | 9494 | 2920 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1280x2772 | 2392x1080 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 5520 mAh | |
| Charging | 100W | 45W | |
| Main camera | 50 MP | 108 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 12GB / 16GB | 8GB / 12GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 3500 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP66 | |
| Dimensions | 162.9×77.9×8.2 mm | 164.0×75.4×7.4 mm | |
| Weight | 227 g | 178 g | |
| Launch price | $420 | $229 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Redmi Note 15
- Main: 108MP
- Ultrawide: 8MP
- Front: 20MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Redmi Note 15
- 6.8" AMOLED
- Resolution: 2392x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Redmi Note 15
- 5520 mAh
- Wired: 45W
- No wireless charging
We compared Redmi K90 Ultra and Redmi Note 15, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Redmi Note 15 by 292.9% in our overall performance rating.
Launch price difference: $191. Redmi Note 15 was $191 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Redmi Note 15 (92/100 vs 55/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Redmi Note 15 (94/100 vs 79/100).
camera
In the "camera" category, the Redmi Note 15 is a bit better (46/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Redmi Note 15 (78/100 vs 54/100).
portability
In the "portability" category, the Redmi Note 15 significantly outperforms the Redmi K90 Ultra (79/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Redmi Note 15?
The Redmi K90 Ultra is noticeably better than the Redmi Note 15 — the overall rating gap is 16 points.
What is the rating of the Redmi K90 Ultra and the Redmi Note 15?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Redmi Note 15 — 57/100.
Which has the better camera: the Redmi K90 Ultra or the Redmi Note 15?
The Redmi Note 15 leads on camera score (46/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the Redmi Note 15?
The Redmi K90 Ultra leads on performance (92/100 vs 55/100).
Should you choose the Redmi K90 Ultra over the Redmi Note 15?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Redmi Note 15 is a better fit for everyday use.