Well, I have all the parts for my new computer! Now I just have to put it together. I now have the heaviest video card I've ever purchased, a Sapphire dual fan HD 7950. It's an absolute monster with most of the bulk in heat pipes and fans. I usually go for mid performance video cards and this is a bit of a step up, so maybe I just haven't been seeing what the higher end stuff is like. At that, this card is supposed to be cooler and substantially quieter than the HD 7970 cards (which they say sound like jet engines) and naturally, lower performance than the HD 7970, but from the specs it should have more performance than I'll need for a while.
This machine will also have a good performance SSD for the primary drive and a fast, though not ultimate, CPU (I7 2700K). It should be good for gaming, though that isn't the only reason I'm building it. I am hoping I'll have more luck with some games that aren't working on my current box (Fallout 3, for instance, always crashes a little into the game on my current box).