Redmi K90 Ultra vs Xiaomi 15S Pro
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 15S Pro (2025) runs on the Xiaomi XRING O1; estimated prices are $420 and $760. By overall MobileRank rating, the Xiaomi 15S Pro leads — 84/100 vs 75/100 (a 9-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6100); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 2,998,904).
Redmi K90 Ultra
Xiaomi 15S Pro
- Higher AnTuTu: 3119308 vs 2998904
- Better Geekbench Single: 3041 vs 2746
- Better Geekbench Multi: 9494 vs 8431
- Bigger battery: 8550 vs 6100 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper: $420 vs $760
- Higher performance (92/100 vs 89/100)
- Longer battery life (92/100 vs 77/100)
- Better display (94/100 vs 90/100)
- Better value for money (86/100 vs 80/100)
- Better camera (78/100 vs 37/100)
Comparing the Redmi K90 Ultra vs the Xiaomi 15S Pro, the Xiaomi 15S Pro scores 9 points higher (84/100 vs 75/100). In the "camera" category, the Xiaomi 15S Pro leads (78/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (92/100 vs 77/100). In the "performance" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (92/100 vs 89/100). In the "display" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15S Pro significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Xiaomi 15S Pro (92/100 vs 77/100). In the "value for money" category, the Redmi K90 Ultra is a bit better (86/100 vs 80/100).
| Specification | Redmi K90 Ultra | Xiaomi 15S Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Xiaomi XRING O1 | |
| AnTuTu | 3119308 | 2998904 | |
| Geekbench Single | 3041 | 2746 | |
| Geekbench Multi | 9494 | 8431 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1280x2772 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6100 mAh | |
| Charging | 100W | 90W | |
| 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 | 512GB / 1TB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | — | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | — | |
| Weight | 227 g | — | |
| Price | $420 | $760 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 15S Pro
- Main: 50MP f/f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Xiaomi 15S Pro
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- Wireless charging: no data
Xiaomi 15S Pro
- 6100 mAh
- Wired: 90W
- Wireless charging: no data
We compared Redmi K90 Ultra and Xiaomi 15S Pro, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Xiaomi 15S Pro by 4.0% in our overall performance rating.
Price difference: $340. Redmi K90 Ultra is cheaper by $340.
performance
In the "performance" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (92/100 vs 89/100).
display
In the "display" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15S Pro significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Xiaomi 15S Pro (92/100 vs 77/100).
value for money
In the "value for money" category, the Redmi K90 Ultra is a bit better (86/100 vs 80/100).
Which is better: the Redmi K90 Ultra or the Xiaomi 15S Pro?
The Xiaomi 15S Pro edges out the Redmi K90 Ultra by just 9 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 Ultra and the Xiaomi 15S Pro?
The Redmi K90 Ultra has a MobileRank rating of 75/100, the Xiaomi 15S Pro — 84/100.
Which has the better camera: the Redmi K90 Ultra or the Xiaomi 15S Pro?
The Xiaomi 15S Pro leads on camera score (78/100 vs 37/100).
Should you choose the Redmi K90 Ultra over the Xiaomi 15S Pro?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi 15S Pro is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.