Hi, I have an Asrock x58 "supercomputer" MB. I would like to upgrade to fastest possible CPU. I thought I could use Xeon w3690, but it seems that Xeon CPUs are not supported by this MB? What I've read online seems to say both, that they are supported with x58 mb, and that they are not. But Asrock's specs for this MB only mention i7 as compatible. Can anyone confirm one way or the other? If not, I will go with i7 980x. Many thanks.