I have recently bought a new sapphire 7870 to cross fire with my other one. I am unable to get the crossfire option to appear in the ccc settings, and at first I thought that the card was not being found and i looked in the devices and in ccc both of wich i saw it on the list but on ccc it shows in the hardware a primary adapter and a disabled adapter. I was wondering how to enable it or get the crossfire option to appear.
processor - AMD FX 4170 4.2GHz
Ram 8gb corsair vengance
mobo fatality 990fx pro series
PSU- corsair ax750 http://i.imgur.com/8PlyEDX.jpg <<< Pic showing that it shows up.