Nubia Z70 Ultra vs Redmi K90
The Nubia Z70 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $729 and $401. By overall MobileRank rating, the Nubia Z70 Ultra leads — 80/100 vs 76/100 (a 4-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 6150); the Redmi K90 is faster in AnTuTu (3,126,494 vs 3,126,402); the Redmi K90 is noticeably lighter (206g vs 227g).
Profile comparison
Category scores
Nubia Z70 Ultra
Redmi K90
What makes Nubia Z70 Ultra better?
- Higher refresh rate: 144Hz vs 120Hz
- Better camera (79/100 vs 58/100)
- Better display (92/100 vs 82/100)
What makes Redmi K90 better?
- Higher AnTuTu: 3126494 vs 3126402
- Bigger battery: 7100 vs 6150 mAh
- Faster charging: 100W vs 80W
- Lighter: 206g vs 227g
- Cheaper at launch: $401 vs $729
- Longer battery life (72/100 vs 64/100)
- Better portability (55/100 vs 36/100)
Comparison verdict
Comparing the Nubia Z70 Ultra vs the Redmi K90, the Nubia Z70 Ultra scores 4 points higher (80/100 vs 76/100). In the "camera" category, the Nubia Z70 Ultra leads (79/100 vs 58/100). Value score: Nubia Z70 Ultra — 74/100, Redmi K90 — 80/100; 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, both devices are on the same level — 91/100. In the "display" category, the Nubia Z70 Ultra is a bit better (92/100 vs 82/100). In the "camera" category, the Nubia Z70 Ultra notably outperforms the Redmi K90 (79/100 vs 58/100). In the "battery" category, the Redmi K90 is a bit better (72/100 vs 64/100). In the "portability" category, the Redmi K90 notably outperforms the Nubia Z70 Ultra (55/100 vs 36/100).
Specs comparison
| Specification | Nubia Z70 Ultra | Redmi K90 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3126402 | 3126494 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" AMOLED | 6.6" AMOLED | |
| Resolution | 2668x1216 | 2510x1156 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 6150 mAh | 7100 mAh | |
| Charging | 80W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 64 MP | 50 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 | |
| Dimensions | 164.3×77.1×8.6 mm | 157.5×75.3×8.0 mm | |
| Weight | 227 g | 206 g | |
| Launch price | $729 | $401 |
Camera comparison
Nubia Z70 Ultra
- Main: 50MP f/1.59
- Ultrawide: 50MP
- Telephoto: 64MP
- Front: 16MP
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
Nubia Z70 Ultra
- 6.8" AMOLED
- Resolution: 2668x1216
- Refresh rate: 144 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 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
- 7100 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared Nubia Z70 Ultra and Redmi K90, covering their specs and all relevant benchmarks.
Equal performance based on benchmark results.
Benchmarks
Launch prices and where to check today's
Launch price difference: $328. Redmi K90 was $328 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 91/100.
display
In the "display" category, the Nubia Z70 Ultra is a bit better (92/100 vs 82/100).
camera
In the "camera" category, the Nubia Z70 Ultra notably outperforms the Redmi K90 (79/100 vs 58/100).
battery
In the "battery" category, the Redmi K90 is a bit better (72/100 vs 64/100).
portability
In the "portability" category, the Redmi K90 notably outperforms the Nubia Z70 Ultra (55/100 vs 36/100).
Frequently asked questions
Which is better: the Nubia Z70 Ultra or the Redmi K90?
The Nubia Z70 Ultra edges out the Redmi K90 by just 4 points — the two devices are very close in overall level.
What is the rating of the Nubia Z70 Ultra and the Redmi K90?
The Nubia Z70 Ultra has a MobileRank rating of 80/100, the Redmi K90 — 76/100.
Which has the better camera: the Nubia Z70 Ultra or the Redmi K90?
The Nubia Z70 Ultra leads on camera score (79/100 vs 58/100).
Should you choose the Nubia Z70 Ultra over the Redmi K90?
The Nubia Z70 Ultra is a better fit for gamers and power users. The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.