New over-the-top Graphics Card from XFX

For all you hardcore gamers out there…..PCWorld recently reviewed a new Graphics Card officially known as the GeForce 7800 GTX 512MB DDR3 XXX Edition video card (can someone tell what is up with the overextended nomenclature here?). I will admit I am not much of a gaming fanatic, but it appears that this is the Ferrari of Video Cards (at a proportional price of $749!). Am I wrong, or does this bring a whole new meaning to impulsive extravagence. How big of a difference does a Card like this really make? Makes me curious……..