ASUS ROG Phone II ZS660KL vs Redmi K80 Ultra
The ASUS ROG Phone II ZS660KL (2019) runs on the Qualcomm Snapdragon 855+, while the Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+; launch prices were $899 and $350. By overall MobileRank rating, the Redmi K80 Ultra leads — 73/100 vs 52/100 (a 21-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 6000); the main camera is 48 MP vs 50 MP; the Redmi K80 Ultra is faster in AnTuTu (2,874,956 vs 859,084); the Redmi K80 Ultra is noticeably lighter (219g vs 240g).
Profile comparison
Category scores
ASUS ROG Phone II ZS660KL
Redmi K80 Ultra
What makes ASUS ROG Phone II ZS660KL better?
- Better camera (39/100 vs 37/100)
What makes Redmi K80 Ultra better?
- Higher AnTuTu: 2874956 vs 859084
- Better Geekbench Single: 2729 vs 1031
- Better Geekbench Multi: 8430 vs 2864
- Bigger battery: 7410 vs 6000 mAh
- Faster charging: 100W vs 30W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 219g vs 240g
- Cheaper at launch: $350 vs $899
- Higher performance (89/100 vs 55/100)
- Longer battery life (86/100 vs 53/100)
- Better display (94/100 vs 79/100)
- Better portability (40/100 vs 20/100)
Comparison verdict
Comparing the ASUS ROG Phone II ZS660KL vs the Redmi K80 Ultra, the Redmi K80 Ultra scores 21 points higher (73/100 vs 52/100). In the "performance" category, the Redmi K80 Ultra leads (89/100 vs 55/100). In the "battery" category, the Redmi K80 Ultra leads (86/100 vs 53/100). Value score: ASUS ROG Phone II ZS660KL — 16/100, Redmi K80 Ultra — 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, the Redmi K80 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (89/100 vs 55/100). In the "display" category, the Redmi K80 Ultra notably outperforms the ASUS ROG Phone II ZS660KL (94/100 vs 79/100). In the "camera" category, the ASUS ROG Phone II ZS660KL and the Redmi K80 Ultra are nearly equal (39/100 vs 37/100). In the "battery" category, the Redmi K80 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (86/100 vs 53/100). In the "portability" category, the Redmi K80 Ultra notably outperforms the ASUS ROG Phone II ZS660KL (40/100 vs 20/100).
Specs comparison
| Specification | ASUS ROG Phone II ZS660KL | Redmi K80 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | MediaTek Dimensity 9400+ | |
| AnTuTu | 859084 | 2874956 | |
| Geekbench Single | 1031 | 2729 | |
| Geekbench Multi | 2864 | 8430 | |
| Display | 6.6" AMOLED | 6.8" OLED | |
| Resolution | 1080x2340 | 1280x2772 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 6000 mAh | 7410 mAh | |
| Charging | 30W | 100W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Front camera | 24 MP | 20 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 / ROG UI | Android 15 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 171.0×77.6×9.5 mm | — | |
| Weight | 240 g | 219 g | |
| Launch price | $899 | $350 |
Camera comparison
ASUS ROG Phone II ZS660KL
- Main: 48MP f/1.8
- Ultrawide: 13MP
- Front: 24MP
Redmi K80 Ultra
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Front: 20MP
Display comparison
ASUS ROG Phone II ZS660KL
- 6.6" AMOLED
- Resolution: 1080x2340
- Refresh rate: 120 Hz
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
Battery and charging
ASUS ROG Phone II ZS660KL
- 6000 mAh
- Wired: 30W
- No wireless charging
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- Wireless charging: no data
Overall performance score
We compared ASUS ROG Phone II ZS660KL and Redmi K80 Ultra, covering their specs and all relevant benchmarks.
Redmi K80 Ultra leads ASUS ROG Phone II ZS660KL by 70.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $549. Redmi K80 Ultra was $549 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K80 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (89/100 vs 55/100).
display
In the "display" category, the Redmi K80 Ultra notably outperforms the ASUS ROG Phone II ZS660KL (94/100 vs 79/100).
camera
In the "camera" category, the ASUS ROG Phone II ZS660KL and the Redmi K80 Ultra are nearly equal (39/100 vs 37/100).
battery
In the "battery" category, the Redmi K80 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (86/100 vs 53/100).
portability
In the "portability" category, the Redmi K80 Ultra notably outperforms the ASUS ROG Phone II ZS660KL (40/100 vs 20/100).
Frequently asked questions
Which is better: the ASUS ROG Phone II ZS660KL or the Redmi K80 Ultra?
The Redmi K80 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL by 21 points (73/100 vs 52/100).
What is the rating of the ASUS ROG Phone II ZS660KL and the Redmi K80 Ultra?
The ASUS ROG Phone II ZS660KL has a MobileRank rating of 52/100, the Redmi K80 Ultra — 73/100.
Which is more powerful: the ASUS ROG Phone II ZS660KL or the Redmi K80 Ultra?
The Redmi K80 Ultra leads on performance (89/100 vs 55/100).
Should you choose the ASUS ROG Phone II ZS660KL over the Redmi K80 Ultra?
The Redmi K80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.