Well, good to know I so desperately "NEEDED" those 40 lanes of PCIe 3.0 on these Socket 2011 mobos. I might actually use all that bandwidth in 20 years!
LOL well there is an advantage to having 3.0 over 2.0, which is time. Even if you only come up with 100 bytes of data that needs to be passed between the GPU and CPU, 3.0 can pass that data back and forth faster than 2.0, which speeds things up a little