Is it a reference card or AIB?
If AIB, check for recommended PSU. But since you are using a 3600XT you should be able to use it stock anyway as 650watt is the min required.
Probably 110ish at peak for CPU and maybe 200-250ish for GPU, maybe some spikes at 300 but still doable if the PSU is at least 80+ bronze.
What is your next CPU?
The Englishman