I'm running a 6core AMD Phenom 2 Processor, and 2 Hard drives and 2 SSD. I have been running a 6870 for a few months now and enjoying it. I decided to add another one to crossfire on my MSI 890fxa-gd70 MB. I'm using a PC Power and Cooling Silencer 750 (First Gen), and I'm not given the option to crossfire in the Vision control center. Also seems that I only get video of the post screen from the second card, and my fans seem quieter than usual.. Any ideas on my issues? (One card is running 2.0 and one is running 1.1 pci-e but I'm using MSI's recommended slots, should be both at 16x.) Not getting ANY performance gain from this setup.
Make sure that the bridge is in the right location, it's different for 2,3,4 way crossfire. Try swapping it to the other connector pair. Strange, is there anything that needs to be done in the firmware? I'm not familiar with AMD chispets
no. If it was a power issue it wouldn't show up at all. According to the manual both of those slots should be 2.0 speeds, not 1.1 as you said. I see a 1x slot but that's different. Both E1 and E5 should be full 2.0 16x slots. You can verify the link speed using GPUz. Please note that some graphics cards will downclock the link speed to conserve power so you must look at the maximum reported link speed, not the current link speed
You should check and make sure that it's actually in E5 and not E4