Yeah, when I got my current job it was a significant pay increase and I was going to build a brand new PC just for gaming. I really want to play starfcraft 2 and Fallout 3 really badly because I loved the earlier versions of those games as a kid.
I looked into running two slightly cheaper video cards in SLI mode, because my initial thought was, 2 mid grade cards in parallel processing mode would run better than one higher end card. Which, later I found out that my initial logic was completely wrong. I then read into SLI a lot, and the more I read into it the more I found that really it doesn't do anything but cost you more money. I think people just do it for the prestige. It is like all these people buying Vista Ultimate and when in reality Home Premium would have suited them better.
Also, if vista had boasted EFI support then we might have actually seen some bad ass EFI based video cards to come out, but then again MS just put vista out as a cash cow. Hopefully they will get rid of the registry completely, have self contained applications, dual library files (for both 64bit and 32bit) so everything can live in perfect harmony side by side, decent driver support, EFI support, and a command line binary for all gui based applications in Windows Vienna. Then windows would kick ass again, oh and if they locked down the kernel so no more access to kernel hooks. That would even up the security of windows.