I'm experimenting with the idea of hooking up an old pc to the tv down stairs and was wondering what I would need to change in it to allow it to better suit its new roll. It is a HP pavilion with a dual core athilon 64x2 and 4 gigs ram and I have a GTX650ti I just pulled from my main rig and it is using the default psu. Was trying to decide if it needs a better card or power supply in order to play RTS games and HD video playback.