Nubia Air vs Redmi K90 Ultra
The Nubia Air (2025) runs on the Unisoc T8300, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $199 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 51/100 (a 22-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 639,225); the Nubia Air is noticeably lighter (172g vs 227g).
Nubia Air
Redmi K90 Ultra
- Lighter: 172g vs 227g
- Cheaper at launch: $199 vs $420
- Better portability (90/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 639225
- Better Geekbench Single: 3041 vs 880
- Better Geekbench Multi: 9494 vs 2073
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 33W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 47/100)
- Better camera (37/100 vs 34/100)
- Longer battery life (78/100 vs 46/100)
- Better display (94/100 vs 83/100)
Comparing the Nubia Air vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 22 points higher (73/100 vs 51/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 47/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 46/100). Value score: Nubia Air — 66/100, Redmi K90 Ultra — 82/100; 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 Nubia Air (92/100 vs 47/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 83/100). In the "camera" category, the Redmi K90 Ultra and the Nubia Air are nearly equal (37/100 vs 34/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Nubia Air (78/100 vs 46/100). In the "portability" category, the Nubia Air significantly outperforms the Redmi K90 Ultra (90/100 vs 40/100).
| Specification | Nubia Air | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Unisoc T8300 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 639225 | 3119308 | |
| Geekbench Single | 880 | 3041 | |
| Geekbench Multi | 2073 | 9494 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1224x2720 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 33W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 256GB | 256GB / 512GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | 4500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69K | IP68/IP69 | |
| Dimensions | 164.2×76.6×6.7 mm | 162.9×77.9×8.2 mm | |
| Weight | 172 g | 227 g | |
| Launch price | $199 | $420 |
Nubia Air
- Main: 50MP f/f/1.6
- Front: 20MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Nubia Air
- 6.8" AMOLED
- Resolution: 1224x2720
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Nubia Air
- 5000 mAh
- Wired: 33W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Nubia Air and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Nubia Air by 79.5% in our overall performance rating.
Launch price difference: $221. Nubia Air was $221 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Nubia Air (92/100 vs 47/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 83/100).
camera
In the "camera" category, the Redmi K90 Ultra and the Nubia Air are nearly equal (37/100 vs 34/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Nubia Air (78/100 vs 46/100).
portability
In the "portability" category, the Nubia Air significantly outperforms the Redmi K90 Ultra (90/100 vs 40/100).
Which is better: the Nubia Air or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Nubia Air by 22 points (73/100 vs 51/100).
What is the rating of the Nubia Air and the Redmi K90 Ultra?
The Nubia Air has a MobileRank rating of 51/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the Nubia Air or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 47/100).
Should you choose the Nubia Air over the Redmi K90 Ultra?
The Nubia Air is a better fit for everyday use. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.