Hi, I have two gtx 780 acx in sli and was thinking about selling them to get a new r9 290x. I read today that this new amd card is getting really good scores and looks like this mantle thing will take off next month. So, will selling my cards and getting one r9 290x at 1600p be a big loss in fps? I just want a single card solution because I have the gtx 780 acx version in sli and they just get to hot. Also, has amd taken care of there frame pacing issues in the new drivers. Please someone help me decide. I play crisis and bf4 along with all other new first person shooters and a little tomb raider...