buy this to replace two Sapphire 512MB 4870 card . the decrease in noise and temperature be unbelievable . I bump up Skyrim from very high setting to ultra high . much smoother . love the performance increase . the only downside that I have find be a intermittent black screen flash . seem random . happen any time , browse , vpn , gaming . do not happen often . happen when the card 's speed toggle be flip to either setting . hope it be a driver issue . go to hold out for the next version to see if it be fix before talk with support .