I know most people with scoff at this question and say just go ahead and get a new card. But, for curiosity's sake.....I have been using 260gtx X 2 for years now and they still play most games on med. I have a friend that will give me a EVGA 750ti. I have read several 1 on 1 articles about the comparison but never a 260 sli vs single 750i. Should I stick with what I have or switch to the 750ti? Could someone with experience walk me thru it or point me in the right direction?