ASUS ROG Phone II ZS660KL vs OnePlus Ace 6
The ASUS ROG Phone II ZS660KL (2019) runs on the Qualcomm Snapdragon 855+, while the OnePlus Ace 6 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $899 and $399. By overall MobileRank rating, the OnePlus Ace 6 leads — 73/100 vs 52/100 (a 21-point difference). Key differences: the OnePlus Ace 6 has the bigger battery (7800 mAh vs 6000); the main camera is 48 MP vs 50 MP; the OnePlus Ace 6 is faster in AnTuTu (3,332,530 vs 859,084); the OnePlus Ace 6 is noticeably lighter (213g vs 240g).
Profile comparison
Category scores
ASUS ROG Phone II ZS660KL
OnePlus Ace 6
What makes ASUS ROG Phone II ZS660KL better?
- Better camera (39/100 vs 35/100)
What makes OnePlus Ace 6 better?
- Higher AnTuTu: 3332530 vs 859084
- Better Geekbench Single: 3013 vs 1031
- Better Geekbench Multi: 9287 vs 2864
- Bigger battery: 7800 vs 6000 mAh
- Faster charging: 120W vs 30W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 213g vs 240g
- Cheaper at launch: $399 vs $899
- Higher performance (92/100 vs 55/100)
- Longer battery life (79/100 vs 53/100)
- Better display (94/100 vs 79/100)
- Better portability (48/100 vs 20/100)
Comparison verdict
Comparing the ASUS ROG Phone II ZS660KL vs the OnePlus Ace 6, the OnePlus Ace 6 scores 21 points higher (73/100 vs 52/100). In the "performance" category, the OnePlus Ace 6 leads (92/100 vs 55/100). In the "battery" category, the OnePlus Ace 6 leads (79/100 vs 53/100). Value score: ASUS ROG Phone II ZS660KL — 16/100, OnePlus Ace 6 — 74/100; 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 OnePlus Ace 6 significantly outperforms the ASUS ROG Phone II ZS660KL (92/100 vs 55/100). In the "display" category, the OnePlus Ace 6 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 OnePlus Ace 6 are nearly equal (39/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 notably outperforms the ASUS ROG Phone II ZS660KL (79/100 vs 53/100). In the "portability" category, the OnePlus Ace 6 notably outperforms the ASUS ROG Phone II ZS660KL (48/100 vs 20/100).
Specs comparison
| Specification | ASUS ROG Phone II ZS660KL | OnePlus Ace 6 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 859084 | 3332530 | |
| Geekbench Single | 1031 | 3013 | |
| Geekbench Multi | 2864 | 9287 | |
| Display | 6.6" AMOLED | 6.8" OLED | |
| Resolution | 1080x2340 | 2800x1272 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6000 mAh | 7800 mAh | |
| Charging | 30W | 120W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Front camera | 24 MP | 16 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 / ROG UI | Android 15 | |
| Brightness (peak) | — | 1800 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 171.0×77.6×9.5 mm | 163.4×77.0×8.3 mm | |
| Weight | 240 g | 213 g | |
| Launch price | $899 | $399 |
Camera comparison
ASUS ROG Phone II ZS660KL
- Main: 48MP f/1.8
- Ultrawide: 13MP
- Front: 24MP
OnePlus Ace 6
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Display comparison
ASUS ROG Phone II ZS660KL
- 6.6" AMOLED
- Resolution: 1080x2340
- Refresh rate: 120 Hz
OnePlus Ace 6
- 6.8" OLED
- Resolution: 2800x1272
- Refresh rate: 165 Hz
Battery and charging
ASUS ROG Phone II ZS660KL
- 6000 mAh
- Wired: 30W
- No wireless charging
OnePlus Ace 6
- 7800 mAh
- Wired: 120W
- No wireless charging
Overall performance score
We compared ASUS ROG Phone II ZS660KL and OnePlus Ace 6, covering their specs and all relevant benchmarks.
OnePlus Ace 6 leads ASUS ROG Phone II ZS660KL by 74.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $500. OnePlus Ace 6 was $500 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the OnePlus Ace 6 significantly outperforms the ASUS ROG Phone II ZS660KL (92/100 vs 55/100).
display
In the "display" category, the OnePlus Ace 6 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 OnePlus Ace 6 are nearly equal (39/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 notably outperforms the ASUS ROG Phone II ZS660KL (79/100 vs 53/100).
portability
In the "portability" category, the OnePlus Ace 6 notably outperforms the ASUS ROG Phone II ZS660KL (48/100 vs 20/100).
Frequently asked questions
Which is better: the ASUS ROG Phone II ZS660KL or the OnePlus Ace 6?
The OnePlus Ace 6 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 OnePlus Ace 6?
The ASUS ROG Phone II ZS660KL has a MobileRank rating of 52/100, the OnePlus Ace 6 — 73/100.
Which is more powerful: the ASUS ROG Phone II ZS660KL or the OnePlus Ace 6?
The OnePlus Ace 6 leads on performance (92/100 vs 55/100).
Should you choose the ASUS ROG Phone II ZS660KL over the OnePlus Ace 6?
The OnePlus Ace 6 is a better fit for gamers and power users, those who care about battery life.