ASUS Zenfone 6 ZS630KL vs Redmi K90 Ultra
The ASUS Zenfone 6 ZS630KL (2019) runs on the Qualcomm Snapdragon 855, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 48/100 (a 25-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 48 MP vs 50 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 824,513); the ASUS Zenfone 6 ZS630KL is noticeably lighter (190g vs 227g).
ASUS Zenfone 6 ZS630KL
Redmi K90 Ultra
- Lighter: 190g vs 227g
- Better portability (52/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 824513
- Better Geekbench Single: 3041 vs 968
- Better Geekbench Multi: 9494 vs 2731
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 18W
- Better main camera: 50MP vs 48MP
- Higher performance (92/100 vs 54/100)
- Better camera (37/100 vs 36/100)
- Longer battery life (78/100 vs 43/100)
- Better display (94/100 vs 58/100)
Comparing the ASUS Zenfone 6 ZS630KL vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 25 points higher (73/100 vs 48/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 54/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 43/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (92/100 vs 54/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (94/100 vs 58/100). In the "camera" category, the Redmi K90 Ultra and the ASUS Zenfone 6 ZS630KL are nearly equal (37/100 vs 36/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (78/100 vs 43/100). In the "portability" category, the ASUS Zenfone 6 ZS630KL is a bit better (52/100 vs 40/100).
| Specification | ASUS Zenfone 6 ZS630KL | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 824513 | 3119308 | |
| Geekbench Single | 968 | 3041 | |
| Geekbench Multi | 2731 | 9494 | |
| Display | 6.4" IPS LCD | 6.8" AMOLED | |
| Resolution | 1080x2340 | 1280x2772 | |
| Refresh rate | — | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | 18W | 100W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Front camera | — | 20 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 9.0 (Pie), ZenUI 6 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 159.1×75.4×9.2 mm | 162.9×77.9×8.2 mm | |
| Weight | 190 g | 227 g | |
| Launch price | — | $420 |
ASUS Zenfone 6 ZS630KL
- Main: 48MP f/f/1.8
- Ultrawide: 13MP
- Front: —
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
ASUS Zenfone 6 ZS630KL
- 6.4" IPS LCD
- Resolution: 1080x2340
- Refresh rate: —
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
ASUS Zenfone 6 ZS630KL
- 5000 mAh
- Wired: 18W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared ASUS Zenfone 6 ZS630KL and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads ASUS Zenfone 6 ZS630KL by 73.6% in our overall performance rating.
ASUS Zenfone 6 ZS630KL
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (92/100 vs 54/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (94/100 vs 58/100).
camera
In the "camera" category, the Redmi K90 Ultra and the ASUS Zenfone 6 ZS630KL are nearly equal (37/100 vs 36/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (78/100 vs 43/100).
portability
In the "portability" category, the ASUS Zenfone 6 ZS630KL is a bit better (52/100 vs 40/100).
Which is better: the ASUS Zenfone 6 ZS630KL or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL by 25 points (73/100 vs 48/100).
What is the rating of the ASUS Zenfone 6 ZS630KL and the Redmi K90 Ultra?
The ASUS Zenfone 6 ZS630KL has a MobileRank rating of 48/100, the Redmi K90 Ultra — 73/100.
Which is more powerful: the ASUS Zenfone 6 ZS630KL or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 54/100).
Should you choose the ASUS Zenfone 6 ZS630KL over the Redmi K90 Ultra?
The ASUS Zenfone 6 ZS630KL is a better fit for everyday use. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.