Redmi K90 Max vs Xiaomi 15 Ultra
The Redmi K90 Max (2026) runs on the MediaTek Dimensity 9500, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $504 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 75/100 (a 10-point difference). Key differences: the Redmi K90 Max has the bigger battery (8550 mAh vs 6000); the Redmi K90 Max is faster in AnTuTu (3,760,662 vs 3,030,376); the Redmi K90 Max is thinner (8.1mm vs 9.4mm).
Profile comparison
Category scores
Redmi K90 Max
Xiaomi 15 Ultra
What makes Redmi K90 Max better?
- Higher AnTuTu: 3760662 vs 3030376
- Better Geekbench Single: 3293 vs 3050
- Better Geekbench Multi: 10243 vs 10200
- Bigger battery: 8550 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $504 vs $999
- Higher performance (96/100 vs 92/100)
- Better display (94/100 vs 90/100)
- Better portability (41/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Lighter: 225g vs 227g
- Better camera (87/100 vs 37/100)
- Longer battery life (80/100 vs 78/100)
Comparison verdict
Comparing the Redmi K90 Max vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 10 points higher (85/100 vs 75/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 37/100). Value score: Redmi K90 Max — 72/100, Xiaomi 15 Ultra — 80/100; 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 Max and the Xiaomi 15 Ultra are nearly equal (96/100 vs 92/100). In the "display" category, the Redmi K90 Max and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi K90 Max (87/100 vs 37/100). In the "battery" category, the Xiaomi 15 Ultra and the Redmi K90 Max are nearly equal (80/100 vs 78/100). In the "portability" category, the Redmi K90 Max is a bit better (41/100 vs 29/100).
Specs comparison
| Specification | Redmi K90 Max | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3760662 | 3030376 | |
| Geekbench Single | 3293 | 3050 | |
| Geekbench Multi | 10243 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2772x1280 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 3500 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP68 | |
| Dimensions | 162.9×77.9×8.1 mm | 161.3×75.3×9.4 mm | |
| Weight | 227 g | 225 g | |
| Launch price | $504 | $999 |
Camera comparison
Redmi K90 Max
- Main: 50MP f/1.68
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K90 Max
- 6.8" AMOLED
- Resolution: 2772x1280
- Refresh rate: 165 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Max
- 8550 mAh
- Wired: 100W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Redmi K90 Max and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Max leads Xiaomi 15 Ultra by 24.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $495. Redmi K90 Max was $495 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Max and the Xiaomi 15 Ultra are nearly equal (96/100 vs 92/100).
display
In the "display" category, the Redmi K90 Max and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Redmi K90 Max (87/100 vs 37/100).
battery
In the "battery" category, the Xiaomi 15 Ultra and the Redmi K90 Max are nearly equal (80/100 vs 78/100).
portability
In the "portability" category, the Redmi K90 Max is a bit better (41/100 vs 29/100).
Frequently asked questions
Which is better: the Redmi K90 Max or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the Redmi K90 Max — the overall rating gap is 10 points.
What is the rating of the Redmi K90 Max and the Xiaomi 15 Ultra?
The Redmi K90 Max has a MobileRank rating of 75/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Redmi K90 Max or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 37/100).
Should you choose the Redmi K90 Max over the Xiaomi 15 Ultra?
The Redmi K90 Max is a better fit for gamers and power users, those who care about battery life. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.