ASUS Zenfone 8 vs Redmi K80 Ultra
The ASUS Zenfone 8 (2021) runs on the Qualcomm Snapdragon 888, while the Redmi K80 Ultra (2025) runs on the MediaTek Dimensity 9400+; launch prices were $599 and $350. By overall MobileRank rating, the Redmi K80 Ultra leads — 73/100 vs 55/100 (a 18-point difference). Key differences: the Redmi K80 Ultra has the bigger battery (7410 mAh vs 4000); the main camera is 64 MP vs 50 MP; the Redmi K80 Ultra is faster in AnTuTu (2,876,004 vs 1,119,714); the ASUS Zenfone 8 is noticeably lighter (169g vs 219g).
ASUS Zenfone 8
Redmi K80 Ultra
- Better main camera: 64MP vs 50MP
- Lighter: 169g vs 219g
- Better camera (43/100 vs 37/100)
- Better portability (68/100 vs 40/100)
- Higher AnTuTu: 2876004 vs 1119714
- Better Geekbench Single: 2729 vs 1488
- Better Geekbench Multi: 8430 vs 3373
- Bigger battery: 7410 vs 4000 mAh
- Faster charging: 100W vs 30W
- Higher refresh rate: 144Hz vs 120Hz
- Cheaper at launch: $350 vs $599
- Higher performance (89/100 vs 63/100)
- Longer battery life (86/100 vs 29/100)
- Better display (94/100 vs 84/100)
Comparing the ASUS Zenfone 8 vs the Redmi K80 Ultra, the Redmi K80 Ultra scores 18 points higher (73/100 vs 55/100). In the "performance" category, the Redmi K80 Ultra leads (89/100 vs 63/100). In the "battery" category, the Redmi K80 Ultra leads (86/100 vs 29/100). Value score: ASUS Zenfone 8 — 22/100, Redmi K80 Ultra — 86/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K80 Ultra notably outperforms the ASUS Zenfone 8 (89/100 vs 63/100). In the "display" category, the Redmi K80 Ultra is a bit better (94/100 vs 84/100). In the "camera" category, the ASUS Zenfone 8 is a bit better (43/100 vs 37/100). In the "battery" category, the Redmi K80 Ultra significantly outperforms the ASUS Zenfone 8 (86/100 vs 29/100). In the "portability" category, the ASUS Zenfone 8 notably outperforms the Redmi K80 Ultra (68/100 vs 40/100).
| Specification | ASUS Zenfone 8 | Redmi K80 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | MediaTek Dimensity 9400+ | |
| AnTuTu | 1119714 | 2876004 | |
| Geekbench Single | 1488 | 2729 | |
| Geekbench Multi | 3373 | 8430 | |
| Display | 5.9" Super AMOLED | 6.8" OLED | |
| Resolution | 2400x1080 | 1280x2772 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 4000 mAh | 7410 mAh | |
| Charging | 30W | 100W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 12 MP | 8 MP | |
| Front camera | 12 MP | 20 MP | |
| RAM | 6GB / 8GB / 12GB / 16GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11 / ZenUI | Android 15 | |
| Brightness (peak) | 1100 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 148.0×68.5×8.9 mm | — | |
| Weight | 169 g | 219 g | |
| Launch price | $599 | $350 |
ASUS Zenfone 8
- Main: 64MP f/f/1.8
- Ultrawide: 12MP
- Front: 12MP
Redmi K80 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Front: 20MP
ASUS Zenfone 8
- 5.9" Super AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Redmi K80 Ultra
- 6.8" OLED
- Resolution: 1280x2772
- Refresh rate: 144 Hz
ASUS Zenfone 8
- 4000 mAh
- Wired: 30W
- Wireless charging: no data
Redmi K80 Ultra
- 7410 mAh
- Wired: 100W
- Wireless charging: no data
We compared ASUS Zenfone 8 and Redmi K80 Ultra, covering their specs and all relevant benchmarks.
Redmi K80 Ultra leads ASUS Zenfone 8 by 61.1% in our overall performance rating.
Launch price difference: $249. Redmi K80 Ultra was $249 cheaper at launch.
performance
In the "performance" category, the Redmi K80 Ultra notably outperforms the ASUS Zenfone 8 (89/100 vs 63/100).
display
In the "display" category, the Redmi K80 Ultra is a bit better (94/100 vs 84/100).
camera
In the "camera" category, the ASUS Zenfone 8 is a bit better (43/100 vs 37/100).
battery
In the "battery" category, the Redmi K80 Ultra significantly outperforms the ASUS Zenfone 8 (86/100 vs 29/100).
portability
In the "portability" category, the ASUS Zenfone 8 notably outperforms the Redmi K80 Ultra (68/100 vs 40/100).
Which is better: the ASUS Zenfone 8 or the Redmi K80 Ultra?
The Redmi K80 Ultra is noticeably better than the ASUS Zenfone 8 — the overall rating gap is 18 points.
What is the rating of the ASUS Zenfone 8 and the Redmi K80 Ultra?
The ASUS Zenfone 8 has a MobileRank rating of 55/100, the Redmi K80 Ultra — 73/100.
Which has the better camera: the ASUS Zenfone 8 or the Redmi K80 Ultra?
The ASUS Zenfone 8 leads on camera score (43/100 vs 37/100).
Which is more powerful: the ASUS Zenfone 8 or the Redmi K80 Ultra?
The Redmi K80 Ultra leads on performance (89/100 vs 63/100).
Should you choose the ASUS Zenfone 8 over the Redmi K80 Ultra?
The ASUS Zenfone 8 is a better fit for active users. The Redmi K80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.