I thought you need to know what size his PSU is and the CPU, MOBO are? or can you just stick any kind of card in? I mean I see this in all most all of the threads. Just wondering.
There are a lot of factors. Is the case physically big enough for the card, does the motherboard have an appropriate slot, and does the psu have enough 12v amps? The cpu is irrelevant in terms of compatibility.