ASUS Zenfone 8 vs Redmi K90
The ASUS Zenfone 8 (2021) runs on the Qualcomm Snapdragon 888, while the Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $599 and $401. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 55/100 (a 21-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 4000); the main camera is 64 MP vs 50 MP; the Redmi K90 is faster in AnTuTu (3,086,235 vs 1,119,714); the ASUS Zenfone 8 is noticeably lighter (169g vs 206g).
ASUS Zenfone 8
Redmi K90
- Better main camera: 64MP vs 50MP
- Lighter: 169g vs 206g
- Better display (84/100 vs 82/100)
- Better portability (68/100 vs 55/100)
- Higher AnTuTu: 3086235 vs 1119714
- Better Geekbench Single: 3041 vs 1488
- Better Geekbench Multi: 9494 vs 3373
- Bigger battery: 7100 vs 4000 mAh
- Faster charging: 100W vs 30W
- Cheaper at launch: $401 vs $599
- Higher performance (92/100 vs 63/100)
- Better camera (58/100 vs 43/100)
- Longer battery life (72/100 vs 29/100)
Comparing the ASUS Zenfone 8 vs the Redmi K90, the Redmi K90 scores 21 points higher (76/100 vs 55/100). In the "performance" category, the Redmi K90 leads (92/100 vs 63/100). In the "camera" category, the Redmi K90 leads (58/100 vs 43/100). In the "battery" category, the Redmi K90 leads (72/100 vs 29/100). Value score: ASUS Zenfone 8 — 22/100, Redmi K90 — 90/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K90 notably outperforms the ASUS Zenfone 8 (92/100 vs 63/100). In the "display" category, the ASUS Zenfone 8 and the Redmi K90 are nearly equal (84/100 vs 82/100). In the "camera" category, the Redmi K90 notably outperforms the ASUS Zenfone 8 (58/100 vs 43/100). In the "battery" category, the Redmi K90 significantly outperforms the ASUS Zenfone 8 (72/100 vs 29/100). In the "portability" category, the ASUS Zenfone 8 is a bit better (68/100 vs 55/100).
| Specification | ASUS Zenfone 8 | Redmi K90 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1119714 | 3086235 | |
| Geekbench Single | 1488 | 3041 | |
| Geekbench Multi | 3373 | 9494 | |
| Display | 5.9" Super AMOLED | 6.6" AMOLED | |
| Resolution | 2400x1080 | 2510x1156 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4000 mAh | 7100 mAh | |
| Charging | 30W | 100W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 12 MP | 8 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 12 MP | 20 MP | |
| RAM | 6GB / 8GB / 12GB / 16GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 11 / ZenUI | Android 16 | |
| Brightness (peak) | 1100 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 148.0×68.5×8.9 mm | 157.5×75.3×8.0 mm | |
| Weight | 169 g | 206 g | |
| Launch price | $599 | $401 |
ASUS Zenfone 8
- Main: 64MP f/f/1.8
- Ultrawide: 12MP
- Front: 12MP
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
ASUS Zenfone 8
- 5.9" Super AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
ASUS Zenfone 8
- 4000 mAh
- Wired: 30W
- Wireless charging: no data
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
We compared ASUS Zenfone 8 and Redmi K90, covering their specs and all relevant benchmarks.
Redmi K90 leads ASUS Zenfone 8 by 63.7% in our overall performance rating.
Launch price difference: $198. Redmi K90 was $198 cheaper at launch.
performance
In the "performance" category, the Redmi K90 notably outperforms the ASUS Zenfone 8 (92/100 vs 63/100).
display
In the "display" category, the ASUS Zenfone 8 and the Redmi K90 are nearly equal (84/100 vs 82/100).
camera
In the "camera" category, the Redmi K90 notably outperforms the ASUS Zenfone 8 (58/100 vs 43/100).
battery
In the "battery" category, the Redmi K90 significantly outperforms the ASUS Zenfone 8 (72/100 vs 29/100).
portability
In the "portability" category, the ASUS Zenfone 8 is a bit better (68/100 vs 55/100).
Which is better: the ASUS Zenfone 8 or the Redmi K90?
The Redmi K90 significantly outperforms the ASUS Zenfone 8 by 21 points (76/100 vs 55/100).
What is the rating of the ASUS Zenfone 8 and the Redmi K90?
The ASUS Zenfone 8 has a MobileRank rating of 55/100, the Redmi K90 — 76/100.
Which has the better camera: the ASUS Zenfone 8 or the Redmi K90?
The Redmi K90 leads on camera score (58/100 vs 43/100).
Which is more powerful: the ASUS Zenfone 8 or the Redmi K90?
The Redmi K90 leads on performance (92/100 vs 63/100).
Should you choose the ASUS Zenfone 8 over the Redmi K90?
The ASUS Zenfone 8 is a better fit for active users. The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.