Is this GPU compatible with this Mobo?

Yeah you are fine with that Mobo and GPU. They will work fine together. From what I have gathered reading some articles is that 2.1 just implements some components that will be available on PCIe 3.0. But it will work just fine on a 2.0 board.
 
Yes they will work together. 2.1 cards have features that will be included in the 3.0 pci-e format. So its a card that will work in 2.0 slot just fine but will have some extra features what a 2.0 card won't have.
 
Back
Top Bottom