Yes, the Ryzen 5 3600 works well with the RTX 3070.
Yes, the Ryzen 5 3600 works well with the RTX 3070.
Considering your setup, the Ryzen 5 3600 works well with an RTX 3070. Your Corsair CV650W 80+ Bronze should provide sufficient power for the GPU.
It varies by situation. 1080p isn't enough, but 1440p could work. It really depends on the game and whether it supports 4K.
in the worst situation you can always make the card operate at a marginally reduced voltage
The Corsair CX series is generally considered affordable, but not necessarily low-end. It doesn't require an 80 Plus Platinum certification to be effective.
650W covers the setup well. The 3600 model uses about 85W on its label, while the 3070 draws roughly 220W. Unless you're powering ten fans with a pump and holiday lights, the power supply should handle it fine. I'm using the 3600 overclocked with a boosted 2070 Super (drawing around 250W) on a 650W unit—no problems at all.