I have been wondering about this as of late:
Most games require better and better graphics cards (fortunately not so GW). Graphics cards that are more powerful, consume a lot more energy also. I think by now the high-end graphics cards are consuming more powers than dual cores! PSUs and CPUs on the other hand are starting to consume less energy than their predecessors.
So I am wondering what are the criteria you use to buy a graphics card?
The reason I am asking is that I think it's currently nearly impossible to find "energy conscious" cards (ak cards with built-in "cool-n-quite" technology). So I am wondering if there is a market for this at all in this gaming community.