Nubia Z70S Ultra vs Redmi K90
The Nubia Z70S Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $799 and $401. By overall MobileRank rating, the Nubia Z70S Ultra leads — 70/100 vs 68/100 (a 2-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 6600); the Nubia Z70S Ultra is faster in AnTuTu (3,228,937 vs 3,088,357); the Redmi K90 is noticeably lighter (206g vs 228g).
Nubia Z70S Ultra
Redmi K90
- Higher AnTuTu: 3228937 vs 3088357
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (71/100 vs 69/100)
- Better camera (74/100 vs 53/100)
- Bigger battery: 7100 vs 6600 mAh
- Faster charging: 100W vs 80W
- Lighter: 206g vs 228g
- Cheaper: $401 vs $799
- Longer battery life (71/100 vs 63/100)
- Better design/ergonomics (42/100 vs 15/100)
- Better value for money (82/100 vs 55/100)
Comparing the Nubia Z70S Ultra vs the Redmi K90, the Nubia Z70S Ultra scores 2 points higher (70/100 vs 68/100). In the "camera" category, the Nubia Z70S Ultra leads (74/100 vs 53/100). In the "value for money" category, the Redmi K90 leads (82/100 vs 55/100). In the "performance" category, the Nubia Z70S Ultra and the Redmi K90 are nearly equal (71/100 vs 69/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Nubia Z70S Ultra notably outperforms the Redmi K90 (74/100 vs 53/100). In the "battery" category, the Redmi K90 is a bit better (71/100 vs 63/100). In the "design" category, the Redmi K90 notably outperforms the Nubia Z70S Ultra (42/100 vs 15/100). In the "value for money" category, the Redmi K90 notably outperforms the Nubia Z70S Ultra (82/100 vs 55/100).
| Specification | Nubia Z70S Ultra | Redmi K90 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3228937 | 3088357 | |
| Geekbench Single | 3050 | 3050 | |
| Geekbench Multi | 9300 | 9300 | |
| Display | 6.8" AMOLED | 6.6" AMOLED | |
| Resolution | 1216x2688 | 2510x1156 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 6600 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 / 24GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 15, Nebula AIOS 1.5 | 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 | 228 g | 206 g | |
| Price | $799 | $401 |
Nubia Z70S Ultra
- Main: 50MP f/f/1.7
- Ultrawide: 50MP
- Telephoto: 64MP
- Front: 16MP
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Nubia Z70S Ultra
- 6.8" AMOLED
- Resolution: 1216x2688
- Refresh rate: 144 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Nubia Z70S Ultra
- 6600 mAh
- NanoReview test: web browsing 7:53 hrs, total 22:56 hrs
- Wired: 80W
- No wireless charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
We compared Nubia Z70S Ultra and Redmi K90, covering their specs and all relevant benchmarks.
Nubia Z70S Ultra leads Redmi K90 by 4.6% in our overall performance rating.
Price difference: $398. Redmi K90 is cheaper by $398.
performance
In the "performance" category, the Nubia Z70S Ultra and the Redmi K90 are nearly equal (71/100 vs 69/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Nubia Z70S Ultra notably outperforms the Redmi K90 (74/100 vs 53/100).
battery
In the "battery" category, the Redmi K90 is a bit better (71/100 vs 63/100).
design
In the "design" category, the Redmi K90 notably outperforms the Nubia Z70S Ultra (42/100 vs 15/100).
value for money
In the "value for money" category, the Redmi K90 notably outperforms the Nubia Z70S Ultra (82/100 vs 55/100).
Which is better: the Nubia Z70S Ultra or the Redmi K90?
The Nubia Z70S Ultra edges out the Redmi K90 by just 2 points — the two devices are very close in overall level.
What is the rating of the Nubia Z70S Ultra and the Redmi K90?
The Nubia Z70S Ultra has a MobileRank rating of 70/100, the Redmi K90 — 68/100.
Which has the better camera: the Nubia Z70S Ultra or the Redmi K90?
The Nubia Z70S Ultra leads on camera score (74/100 vs 53/100).
Should you choose the Nubia Z70S Ultra over the Redmi K90?
The Nubia Z70S Ultra is a better fit for active users. The Redmi K90 is a better fit for active users, budget-conscious buyers.