I just purchased my refurbed iMac a little over a month ago, I have just noticed when browsing through my graphics card specs that I have the 'ATI HD 4850 512mb' Graphics Card installed, instead of the 'nVIDIA GE 130 512mb' which I wanted and that was listed under the specs when I purchased the iMac from the Apple Refurb Store!? What should I do? Either way I will contact Apple to clarify what card I had purchased if they can tell me, and if I should have had the nVIDIA card, where we go from there? I am aware that the initial 14 day period has elapsed now which may cause problems. The order details and invoices just state .../512/... but not the model, which also leaves me in the dark! Should I just stick with the ATI card anyway? I hear the problems with the card on iMacs i.e Crashes etc...has all been sorted now? I am adament the refurb listing stated nVIDIA, as I made a timely decision and studied the specs before making the purchase! I intend to utilise the card for playing games like Flight Sim X and others mainly, also graphic and design based programs if requiring the graphics card for any reason. I am also aware there maybe some T&C's or small print that state that as a refurb I may not get the exact specs I ordered? Thoughts anybody?