ASUS ROG Phone II ZS660KL vs Vivo X300 Ultra
The ASUS ROG Phone II ZS660KL (2019) runs on the Qualcomm Snapdragon 855+, while the Vivo X300 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $899 and $950. By overall MobileRank rating, the Vivo X300 Ultra leads — 91/100 vs 52/100 (a 39-point difference). Key differences: the Vivo X300 Ultra has the bigger battery (7000 mAh vs 6000); the main camera is 48 MP vs 200 MP; the Vivo X300 Ultra is faster in AnTuTu (4,247,433 vs 859,084); the Vivo X300 Ultra is thinner (8.2mm vs 9.5mm).
Profile comparison
Category scores
ASUS ROG Phone II ZS660KL
Vivo X300 Ultra
What makes ASUS ROG Phone II ZS660KL better?
- Cheaper at launch: $899 vs $950
- Overall rating 52/100
What makes Vivo X300 Ultra better?
- Higher AnTuTu: 4247433 vs 859084
- Better Geekbench Single: 3639 vs 1031
- Better Geekbench Multi: 11047 vs 2864
- Bigger battery: 7000 vs 6000 mAh
- Faster charging: 100W vs 30W
- Better main camera: 200MP vs 48MP
- Lighter: 230g vs 240g
- Higher performance (99/100 vs 55/100)
- Better camera (96/100 vs 39/100)
- Longer battery life (85/100 vs 53/100)
- Better display (89/100 vs 79/100)
- Better portability (39/100 vs 20/100)
Comparison verdict
Comparing the ASUS ROG Phone II ZS660KL vs the Vivo X300 Ultra, the Vivo X300 Ultra scores 39 points higher (91/100 vs 52/100). In the "performance" category, the Vivo X300 Ultra leads (99/100 vs 55/100). In the "camera" category, the Vivo X300 Ultra leads (96/100 vs 39/100). In the "battery" category, the Vivo X300 Ultra leads (85/100 vs 53/100). Value score: ASUS ROG Phone II ZS660KL — 16/100, Vivo X300 Ultra — 94/100; 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 Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (99/100 vs 55/100). In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 79/100). In the "camera" category, the Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (96/100 vs 39/100). In the "battery" category, the Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (85/100 vs 53/100). In the "portability" category, the Vivo X300 Ultra notably outperforms the ASUS ROG Phone II ZS660KL (39/100 vs 20/100).
Specs comparison
| Specification | ASUS ROG Phone II ZS660KL | Vivo X300 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 859084 | 4247433 | |
| Geekbench Single | 1031 | 3639 | |
| Geekbench Multi | 2864 | 11047 | |
| Display | 6.6" AMOLED | 6.8" LTPO OLED | |
| Resolution | 1080x2340 | 3168x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6000 mAh | 7000 mAh | |
| Charging | 30W | 100W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 170 | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 24 MP | 32 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 / ROG UI | Android 16 | |
| NFC | yes | yes | |
| Protection | — | IP69 | |
| Dimensions | 171.0×77.6×9.5 mm | 163.0×76.8×8.2 mm | |
| Weight | 240 g | 230 g | |
| Launch price | $899 | $950 |
Camera comparison
ASUS ROG Phone II ZS660KL
- Main: 48MP f/1.8
- Ultrawide: 13MP
- Front: 24MP
Vivo X300 Ultra
- Main: 200MP f/1.6
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 32MP
Display comparison
ASUS ROG Phone II ZS660KL
- 6.6" AMOLED
- Resolution: 1080x2340
- Refresh rate: 120 Hz
Vivo X300 Ultra
- 6.8" LTPO OLED
- Resolution: 3168x1440
- Refresh rate: 120 Hz
Battery and charging
ASUS ROG Phone II ZS660KL
- 6000 mAh
- Wired: 30W
- No wireless charging
Vivo X300 Ultra
- 7000 mAh
- NanoReview test: web browsing 10:18 hrs, total 29:11 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared ASUS ROG Phone II ZS660KL and Vivo X300 Ultra, covering their specs and all relevant benchmarks.
Vivo X300 Ultra leads ASUS ROG Phone II ZS660KL by 79.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $51. ASUS ROG Phone II ZS660KL was $51 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (99/100 vs 55/100).
display
In the "display" category, the Vivo X300 Ultra is a bit better (89/100 vs 79/100).
camera
In the "camera" category, the Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (96/100 vs 39/100).
battery
In the "battery" category, the Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL (85/100 vs 53/100).
portability
In the "portability" category, the Vivo X300 Ultra notably outperforms the ASUS ROG Phone II ZS660KL (39/100 vs 20/100).
Frequently asked questions
Which is better: the ASUS ROG Phone II ZS660KL or the Vivo X300 Ultra?
The Vivo X300 Ultra significantly outperforms the ASUS ROG Phone II ZS660KL by 39 points (91/100 vs 52/100).
What is the rating of the ASUS ROG Phone II ZS660KL and the Vivo X300 Ultra?
The ASUS ROG Phone II ZS660KL has a MobileRank rating of 52/100, the Vivo X300 Ultra — 91/100.
Which has the better camera: the ASUS ROG Phone II ZS660KL or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on camera score (96/100 vs 39/100).
Which is more powerful: the ASUS ROG Phone II ZS660KL or the Vivo X300 Ultra?
The Vivo X300 Ultra leads on performance (99/100 vs 55/100).
Should you choose the ASUS ROG Phone II ZS660KL over the Vivo X300 Ultra?
The Vivo X300 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.