I don't quite understand what you're saying. *scratches head*. The more lanes you got flowing to that CPU the better, so a new x32 lane PCI bus would be a whole lot better then x16.
But folks what I really want is an AGP Express slot. AGP is really good as it is on 8X, but imagine carryign that all the way to x16 or x32 or somewhere in between.
Also, check this really sweet Physics Processing Supply Unit, or PPSU. The Ageia PhysX. Check this link out and see what this baby can do.