Redmi K90 vs Xiaomi 17 Ultra (China)
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 17 Ultra (China) (2025) runs on the Snapdragon 8 Elite Gen 5; launch prices were $401 and $892. By overall MobileRank rating, the Xiaomi 17 Ultra (China) leads — 87/100 vs 76/100 (a 11-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 6800); the Xiaomi 17 Ultra (China) is faster in AnTuTu (3,950,082 vs 3,077,585); the Redmi K90 is noticeably lighter (206g vs 224g).
Profile comparison
Category scores
Redmi K90
Xiaomi 17 Ultra (China)
What makes Redmi K90 better?
- Bigger battery: 7100 vs 6800 mAh
- Faster charging: 100W vs 90W
- Lighter: 206g vs 224g
- Cheaper at launch: $401 vs $892
- Better display (82/100 vs 81/100)
- Better portability (55/100 vs 42/100)
What makes Xiaomi 17 Ultra (China) better?
- Higher AnTuTu: 3950082 vs 3077585
- Better Geekbench Single: 3639 vs 3013
- Better Geekbench Multi: 11047 vs 9287
- Higher performance (98/100 vs 91/100)
- Better camera (87/100 vs 58/100)
- Longer battery life (83/100 vs 72/100)
Comparison verdict
Comparing the Redmi K90 vs the Xiaomi 17 Ultra (China), the Xiaomi 17 Ultra (China) scores 11 points higher (87/100 vs 76/100). In the "camera" category, the Xiaomi 17 Ultra (China) leads (87/100 vs 58/100). In the "battery" category, the Xiaomi 17 Ultra (China) leads (83/100 vs 72/100). Value score: Redmi K90 — 80/100, Xiaomi 17 Ultra (China) — 88/100; 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 Xiaomi 17 Ultra (China) is a bit better (98/100 vs 91/100). In the "display" category, the Redmi K90 and the Xiaomi 17 Ultra (China) are nearly equal (82/100 vs 81/100). In the "camera" category, the Xiaomi 17 Ultra (China) notably outperforms the Redmi K90 (87/100 vs 58/100). In the "battery" category, the Xiaomi 17 Ultra (China) is a bit better (83/100 vs 72/100). In the "portability" category, the Redmi K90 is a bit better (55/100 vs 42/100).
Specs comparison
| Specification | Redmi K90 | Xiaomi 17 Ultra (China) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 3077585 | 3950082 | |
| Geekbench Single | 3013 | 3639 | |
| Geekbench Multi | 9287 | 11047 | |
| Display | 6.6" AMOLED | 6.9" LTPO AMOLED | |
| Resolution | 2510x1156 | 1200x2608 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 mAh | 6800 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 50 MP | 200 MP | |
| Front camera | 20 MP | 50 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 157.5×75.3×8.0 mm | 162.9×77.6×8.3 mm | |
| Weight | 206 g | 224 g | |
| Launch price | $401 | $892 |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Xiaomi 17 Ultra (China)
- Main: 50MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Xiaomi 17 Ultra (China)
- 6.9" LTPO AMOLED
- Resolution: 1200x2608
- Refresh rate: 120 Hz
Battery and charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Xiaomi 17 Ultra (China)
- 6800 mAh
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Redmi K90 and Xiaomi 17 Ultra (China), covering their specs and all relevant benchmarks.
Xiaomi 17 Ultra (China) leads Redmi K90 by 22.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $491. Redmi K90 was $491 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 17 Ultra (China) is a bit better (98/100 vs 91/100).
display
In the "display" category, the Redmi K90 and the Xiaomi 17 Ultra (China) are nearly equal (82/100 vs 81/100).
camera
In the "camera" category, the Xiaomi 17 Ultra (China) notably outperforms the Redmi K90 (87/100 vs 58/100).
battery
In the "battery" category, the Xiaomi 17 Ultra (China) is a bit better (83/100 vs 72/100).
portability
In the "portability" category, the Redmi K90 is a bit better (55/100 vs 42/100).
Frequently asked questions
Which is better: the Redmi K90 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) is noticeably better than the Redmi K90 — the overall rating gap is 11 points.
What is the rating of the Redmi K90 and the Xiaomi 17 Ultra (China)?
The Redmi K90 has a MobileRank rating of 76/100, the Xiaomi 17 Ultra (China) — 87/100.
Which has the better camera: the Redmi K90 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on camera score (87/100 vs 58/100).
Which is more powerful: the Redmi K90 or the Xiaomi 17 Ultra (China)?
The Xiaomi 17 Ultra (China) leads on performance (98/100 vs 91/100).
Should you choose the Redmi K90 over the Xiaomi 17 Ultra (China)?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Xiaomi 17 Ultra (China) is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.