Can you step up factory overclocked cards? I was thinking of buying the EVGA 8800GT SC from dell ($260 ($230 AR))(unsing $100 gift card and $25 coupon) but was wondering if I could step that card up or would I have to buy the 8800gt without overclock of any sort. The superclock and stock clocked 8800gt are currently for the same price so either way, I wouldn't have to pay more or less. I am planning to get a 8800gt now then stepping up within 90days probably like on the 80th day, step up to hopefully a 9800gt or 9800gtx if the price difference let's me.