hi im planing on building a dual boot system for osx and windows , i noticed nvidia and amd released mac edition of radeon 7950 http://www.newegg.com/Product/Product.aspx?Item=N82E16814202027&cm_mmc=SNC-YouTube-_-NETV-_-3E2riABPOgs-_-14-202-027 and the gtx 680 http://www.newegg.com/Product/Product.aspx?Item=N82E16814130912&cm_mmc=SNC-YouTube-_-NETV-_-3E2riABPOgs-_-14-130-912 and i wonder if its really worth the extra like $100