ASUS Zenfone 12 Ultra vs Redmi K90 Ultra
The ASUS Zenfone 12 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 $999 and $420. By overall MobileRank rating, the ASUS Zenfone 12 Ultra leads — 75/100 vs 73/100 (a 2-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5500); the ASUS Zenfone 12 Ultra is faster in AnTuTu (3,247,013 vs 3,233,695).
Profile comparison
Category scores
ASUS Zenfone 12 Ultra
Redmi K90 Ultra
What makes ASUS Zenfone 12 Ultra better?
- Higher AnTuTu: 3247013 vs 3233695
- Lighter: 220g vs 227g
- Better camera (56/100 vs 37/100)
What makes Redmi K90 Ultra better?
- Bigger battery: 8550 vs 5500 mAh
- Faster charging: 100W vs 65W
- Higher refresh rate: 165Hz vs 144Hz
- Cheaper at launch: $420 vs $999
- Longer battery life (78/100 vs 66/100)
- Better display (94/100 vs 89/100)
- Better portability (40/100 vs 38/100)
Comparison verdict
Comparing the ASUS Zenfone 12 Ultra vs the Redmi K90 Ultra, the ASUS Zenfone 12 Ultra scores 2 points higher (75/100 vs 73/100). In the "camera" category, the ASUS Zenfone 12 Ultra leads (56/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 66/100). Value score: ASUS Zenfone 12 Ultra — 60/100, 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, both devices are on the same level — 92/100. In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100). In the "camera" category, the ASUS Zenfone 12 Ultra notably outperforms the Redmi K90 Ultra (56/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100). In the "portability" category, the Redmi K90 Ultra and the ASUS Zenfone 12 Ultra are nearly equal (40/100 vs 38/100).
Specs comparison
| Specification | ASUS Zenfone 12 Ultra | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3247013 | 3233695 | |
| Geekbench Single | 3013 | 3013 | |
| Geekbench Multi | 9287 | 9287 | |
| Display | 6.8" LTPO AMOLED | 6.8" AMOLED | |
| Resolution | 2400x1080 | 1280x2772 | |
| Refresh rate | 144 Hz | 165 Hz | |
| Battery | 5500 mAh | 8550 mAh | |
| Charging | 65W | 100W | |
| Wireless charging | 15W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Telephoto | 32 MP | 0 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 15 / ZenUI | Android 16 | |
| Brightness (peak) | 2500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.8×77.0×8.9 mm | 162.9×77.9×8.2 mm | |
| Weight | 220 g | 227 g | |
| Launch price | $999 | $420 |
Camera comparison
ASUS Zenfone 12 Ultra
- Main: 50MP f/1.9
- Ultrawide: 13MP
- Telephoto: 32MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
ASUS Zenfone 12 Ultra
- 6.8" LTPO AMOLED
- Resolution: 2400x1080
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
ASUS Zenfone 12 Ultra
- 5500 mAh
- Wired: 65W
- Wireless: 15W
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared ASUS Zenfone 12 Ultra and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
ASUS Zenfone 12 Ultra leads Redmi K90 Ultra by 0.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $579. Redmi K90 Ultra was $579 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 92/100.
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100).
camera
In the "camera" category, the ASUS Zenfone 12 Ultra notably outperforms the Redmi K90 Ultra (56/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100).
portability
In the "portability" category, the Redmi K90 Ultra and the ASUS Zenfone 12 Ultra are nearly equal (40/100 vs 38/100).
Frequently asked questions
Which is better: the ASUS Zenfone 12 Ultra or the Redmi K90 Ultra?
The ASUS Zenfone 12 Ultra edges out the Redmi K90 Ultra by just 2 points — the two devices are very close in overall level.
What is the rating of the ASUS Zenfone 12 Ultra and the Redmi K90 Ultra?
The ASUS Zenfone 12 Ultra has a MobileRank rating of 75/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the ASUS Zenfone 12 Ultra or the Redmi K90 Ultra?
The ASUS Zenfone 12 Ultra leads on camera score (56/100 vs 37/100).
Should you choose the ASUS Zenfone 12 Ultra over the Redmi K90 Ultra?
The ASUS Zenfone 12 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.