Most people are in the situation where they figure out what components they want and then choose a power supply based on their needs. I'm in a somewhat unique situation in that for my next HTPC build, I'll probably be limited to an inbuilt PSU, figure ~300watts. Question is - what's the most robust graphics card I can squeeze out of that? (for a little gaming on the side. nothing intense though) I'll probably have a low-ish power cpu/mobo setup, bluray drive/burner couple of hard disks in the system apart from my graphics card. The cases I'm looking at are either Antec or Silverstone so I figure they will probably perform decently for the rated wattage.