Recently one of my 2 8800GT's died and was wondering if it is worth it to upgrade to a GTX 260 or Radeon 4890 and maybe use my 8800GT as a dedicated phsyx card. I don't really want to spend a lot more then $200 but I also don't want to have to replace the card 6 months later. I currently game at 1680x1050 with no plans to upgrade from that res anytime soon. What are your opinions?