I can get my hands on a Intel Mac Pro with (2) 5130 2.0 Xeon processors 771 socket. I can also get (2) 5160 3.0 processors also Xeon 771 socket. Can I just swap these out and expect it to work? I'm a pc guy and this generally would be no problem using the same socket, but that's pc, not being really familiar with macs, I thought I'd ask first.