Which is better XFX Geforce 9800GT 512MB XXX or XFX Geforce 8800GT 512MB XXX?I have compared on xfxforce.com and they are both same on everything.And can someone give me some reviews or show me a link of reviews on games with XFX Geforce 9800GT 512MB and XFX Geforce 9800GT 512MB XXX?