Currently have a system with a Radeon HD5770. Looking into getting a second card that's compatible to enable crossfire on my Asrock M3A770DE. The current card is discontinued and I can get refurbished ones around $100 when googling. Any suggestions on if I should get the same one refurbished or if there's one around the same price range that would be better to use? Newegg doesn't show any radeon HD 5xxx 1GB cards that are crossfire capable when I searched either. Don't think I need crossfire for sure yet, but just looking around to see if I think it's worth it. Thanks