Budget GPUs

[elidell]

u did not mention whats ur budget.

best card at the moment is 1080 TI.
if u will have 4, PSU wont be enough same with the RAM
and u did not searched well, we are speaking about them all the time.

(and dont use ka li)

Ok won't use The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali).. I suppose Ubuntu is recommended? 

I realize I will likely have to upgrade my psu and ram (have two slots open) once I get more than 1 or 2 gpus, but it's what I have right now..  brings up a good question, how do I calculate how much wattage and ram based on gpu

I'm trying to figure out my budget, I'd like to spend under $400 per gpu and will likely do that one at a time..