I'm starting now in the mining world and I have an 8+ year idle machine that has the motherboard model asus-m4a79xtd-evo:

https://pcpartpicker.com/product/fvxfrH/asus-motherboard-m4a79xtdevo

I'm in doubt, does it support beginner mining?, and if so, how many GeForce 3070 graphics cards would this motherboard support in a rig?

I really want to use 2 graphics cards to start, which power supply would I recommend to start with only these 2 graphics cards using this motherboard?