My friend bought an extra r9 280x gigabyte and said he can sell it to me new for $150, and how much are biggers psus and do i need a different motherboard?
I'd get the 280x and sell it for like $200 as u would need a bigger case PSU and CPU to power it, if you want to get it and sell your reg PC and some other things and build a pull rig u can as the rest of a PC would only be $400 or so and you would have high end pc