Redmi K90 Ultra vs Xiaomi 17 Ultra
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 17 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; estimated prices are $420 and $999. By overall MobileRank rating, the Xiaomi 17 Ultra leads — 82/100 vs 61/100 (a 21-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6000); the Xiaomi 17 Ultra is faster in AnTuTu (3,593,401 vs 2,760,000).
Redmi K90 Ultra
Xiaomi 17 Ultra
- Bigger battery: 8550 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper: $420 vs $999
- Longer battery life (77/100 vs 72/100)
- Better value for money (81/100 vs 41/100)
- Higher AnTuTu: 3593401 vs 2760000
- Better Geekbench Single: 3640 vs 3050
- Better Geekbench Multi: 11033 vs 9300
- Lighter: 226g vs 227g
- Higher performance (87/100 vs 65/100)
- Better camera (93/100 vs 32/100)
- Better design/ergonomics (17/100 vs 16/100)
Comparing the Redmi K90 Ultra vs the Xiaomi 17 Ultra, the Xiaomi 17 Ultra scores 21 points higher (82/100 vs 61/100). In the "performance" category, the Xiaomi 17 Ultra leads (87/100 vs 65/100). In the "camera" category, the Xiaomi 17 Ultra leads (93/100 vs 32/100). In the "value for money" category, the Redmi K90 Ultra leads (81/100 vs 41/100). In the "performance" category, the Xiaomi 17 Ultra notably outperforms the Redmi K90 Ultra (87/100 vs 65/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Redmi K90 Ultra (93/100 vs 32/100). In the "battery" category, the Redmi K90 Ultra is a bit better (77/100 vs 72/100). In the "design" category, the Xiaomi 17 Ultra and the Redmi K90 Ultra are nearly equal (17/100 vs 16/100). In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Xiaomi 17 Ultra (81/100 vs 41/100).
| Specification | Redmi K90 Ultra | Xiaomi 17 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 2760000 | 3593401 | |
| Geekbench Single | 3050 | 3640 | |
| Geekbench Multi | 9300 | 11033 | |
| Display | 6.8" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1280x2772 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 166 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | IP68 | |
| Dimensions | 162.9×77.9×8.2 mm | 162.9×77.6×8.3 mm | |
| Weight | 227 g | 226 g | |
| Price | $420 | $999 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 17 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Xiaomi 17 Ultra
- 6.8" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Xiaomi 17 Ultra
- 6000 mAh
- NanoReview test: web browsing 16:09 hrs, total 33:23 hrs
- Wired: 90W
- Wireless: 50W
We compared Redmi K90 Ultra and Xiaomi 17 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra leads Redmi K90 Ultra by 23.2% in our overall performance rating.
Price difference: $579. Redmi K90 Ultra is cheaper by $579.
performance
In the "performance" category, the Xiaomi 17 Ultra notably outperforms the Redmi K90 Ultra (87/100 vs 65/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Xiaomi 17 Ultra significantly outperforms the Redmi K90 Ultra (93/100 vs 32/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (77/100 vs 72/100).
design
In the "design" category, the Xiaomi 17 Ultra and the Redmi K90 Ultra are nearly equal (17/100 vs 16/100).
value for money
In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Xiaomi 17 Ultra (81/100 vs 41/100).
Which is better: the Redmi K90 Ultra or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra significantly outperforms the Redmi K90 Ultra by 21 points (82/100 vs 61/100).
What is the rating of the Redmi K90 Ultra and the Xiaomi 17 Ultra?
The Redmi K90 Ultra has a MobileRank rating of 61/100, the Xiaomi 17 Ultra — 82/100.
Which has the better camera: the Redmi K90 Ultra or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on camera score (93/100 vs 32/100).
Which is more powerful: the Redmi K90 Ultra or the Xiaomi 17 Ultra?
The Xiaomi 17 Ultra leads on performance (87/100 vs 65/100).
Should you choose the Redmi K90 Ultra over the Xiaomi 17 Ultra?
The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers. The Xiaomi 17 Ultra is a better fit for gamers and power users, mobile photography enthusiasts.