I recently bought a pc from cyberpower and wanted to run gtx 760 in SLI, i got the pc few days ago and realized the mobo doesnt support SLI only supports crossifre, I called them and they said if i send the cards back they give me money back. what are some good cards on amd side that is equal to price and performance of 760. i was looking at 280x single card. is it better to go Crossfire with that card or just stay with one? Also can i use the same connectors that 760 used to install 280x. my mobo is asus z97k psu 750 watts cpu 4790k windows 7