cxm 650w

Hi all I plan to buy a 3070 (EVGA Geforce RTX 3070 BLACK). My current build has a Ryzen 7 3800x, a GTX 1080 and a CXM 650W). On the internet it shows that the 3070 requires a minimum of a 650W PSU. Would my build be okay if I am running these components (Didn't mention my existing drives). I am...