Nubia Z70 Ultra vs Redmi K90 Ultra
The Nubia Z70 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $729 and $420. By overall MobileRank rating, the Nubia Z70 Ultra leads — 80/100 vs 73/100 (a 7-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6150); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 3,126,402).
Profile comparison
Category scores
Nubia Z70 Ultra
Redmi K90 Ultra
What makes Nubia Z70 Ultra better?
- Better camera (79/100 vs 37/100)
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 3126402
- Bigger battery: 8550 vs 6150 mAh
- Faster charging: 100W vs 80W
- Higher refresh rate: 165Hz vs 144Hz
- Cheaper at launch: $420 vs $729
- Higher performance (92/100 vs 91/100)
- Longer battery life (78/100 vs 64/100)
- Better display (94/100 vs 92/100)
- Better portability (40/100 vs 36/100)
Comparison verdict
Comparing the Nubia Z70 Ultra vs the Redmi K90 Ultra, the Nubia Z70 Ultra scores 7 points higher (80/100 vs 73/100). In the "camera" category, the Nubia Z70 Ultra leads (79/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 64/100). Value score: Nubia Z70 Ultra — 74/100, Redmi K90 Ultra — 72/100; 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 Ultra and the Nubia Z70 Ultra are nearly equal (92/100 vs 91/100). In the "display" category, the Redmi K90 Ultra and the Nubia Z70 Ultra are nearly equal (94/100 vs 92/100). In the "camera" category, the Nubia Z70 Ultra significantly outperforms the Redmi K90 Ultra (79/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 64/100). In the "portability" category, the Redmi K90 Ultra and the Nubia Z70 Ultra are nearly equal (40/100 vs 36/100).
Specs comparison
| Specification | Nubia Z70 Ultra | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3126402 | 3233695 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 2668x1216 | 1280x2772 | |
| Refresh rate | 144 Hz | 165 Hz | |
| Battery | 6150 mAh | 8550 mAh | |
| Charging | 80W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 64 MP | 0 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | 2000 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 164.3×77.1×8.6 mm | 162.9×77.9×8.2 mm | |
| Weight | 227 g | 227 g | |
| Launch price | $729 | $420 |
Camera comparison
Nubia Z70 Ultra
- Main: 50MP f/1.59
- Ultrawide: 50MP
- Telephoto: 64MP
- Front: 16MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
Nubia Z70 Ultra
- 6.8" AMOLED
- Resolution: 2668x1216
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
Nubia Z70 Ultra
- 6150 mAh
- NanoReview test: web browsing 8:27 hrs, total 20:13 hrs
- Wired: 80W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Nubia Z70 Ultra and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Nubia Z70 Ultra by 3.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $309. Redmi K90 Ultra was $309 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the Nubia Z70 Ultra are nearly equal (92/100 vs 91/100).
display
In the "display" category, the Redmi K90 Ultra and the Nubia Z70 Ultra are nearly equal (94/100 vs 92/100).
camera
In the "camera" category, the Nubia Z70 Ultra significantly outperforms the Redmi K90 Ultra (79/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 64/100).
portability
In the "portability" category, the Redmi K90 Ultra and the Nubia Z70 Ultra are nearly equal (40/100 vs 36/100).
Frequently asked questions
Which is better: the Nubia Z70 Ultra or the Redmi K90 Ultra?
The Nubia Z70 Ultra edges out the Redmi K90 Ultra by just 7 points — the two devices are very close in overall level.
What is the rating of the Nubia Z70 Ultra and the Redmi K90 Ultra?
The Nubia Z70 Ultra has a MobileRank rating of 80/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Nubia Z70 Ultra or the Redmi K90 Ultra?
The Nubia Z70 Ultra leads on camera score (79/100 vs 37/100).
Should you choose the Nubia Z70 Ultra over the Redmi K90 Ultra?
The Nubia Z70 Ultra is a better fit for gamers and power users. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.