Hate to sound like a parrot, but..
Just buying the fastest gpu card, sticking it in your old/existing rig, and forgetting about all the other new components, will give you the better gaming rig immediately.
I know it sounds like a scratched record, but I understand people wanting to shell out cash for a great cpu/mobo/ram setup and putting an existing or new lower end graphics card in it - possibly with the intention of adding to it later, chances are tho they stick with the graphics card and have little in-game improvement.
Buying/building a rig, for a gaming pc, imo, most of your cash should go to the gfxcard.
And an X58 system for a new gaming pc, and stick with a 450 ? If it's games, a cheaper chipset and a top end gfxcard would laugh at it, gaming wize.
I know what your talking about, but i just need a new PC because mine is just too slow. I want to have like 50 webpages open while running games and Visual C++ open without it slowing down much. Simply buying a better video card wont help me anymore.
I am currently running a Core 2 Duo 2.2 Ghz with a Intel Classic DG31PR Motherboard with 4 Gig of crappy Ocz ram prolly 800 mhz and its getting pretty limited, something in this old rig is going to die soon, its been through 4 video cards already. I actually want more power for everything.
I'll just buy a 2 new video cards to go in my system at an affordable price rather than buying one very expensive one when my build is done.