HAHA, back to the original question......... Last I heard developers are still working on making GPUs that takes better advantage of pci express....
You just said that.......
Yeah, Alienware, you can over clock a celeron, throw in a 400 dollar video card, and do just about as good as an alienware, seriously!
There's a lot of PCI interconnects being worked on, touted, promoted, etc. etc. PCI express, PCI X, and PCI X2 are the big boys right now. PCI is what like 133mhz or something, PCI X2 can be scaled to over 4 GHZ... And this has been going on for a little while now...... and it's yet to make it mainstream to servers or desktops......... dont look for it in the near future!!!