PCI 2.0 vs 3.0 for SLI setup

[Frankopan]

I currently have an asus sabretooth 990fx. I also an SLI setup with 770's. I'm told that I would see a drastic boost in performance if I were to get an MBO that supports pci 3.0. Is this true? And by how much? Thank you?

 

[cin19]

Not really, read the review, they used the gtx680 that is similar to gtx770. just keep using your system, Also only the intel MB has the pcie3.0X16, that means you have to replace your system to intel if you need the pcie3.0X16. http://www.hardocp.com/article/2012/07/18/pci_express_20_vs_30_gpu_gaming_performance_review/1#.Uq9VTSeE6dc