I picked up two Sapphire Radeon HD 6870's and I'm trying to get them to CrossFire, but CCC just says that the second card is "disabled" and there is no option to enable CrossFire anywhere. My motherboard does support it. GPU-Z says that one is running at PCI-E x 16, while the second card is running at PCI-E x 2. I heard somewhere that the problem could be coming from this PCI-E. I want to try putting the second card in a different PCI-E slot, but that will put the cards incredibly close to each other. Would it be safe to do this? If that's not the problem, then I don't know what to do.