only thing I think i've changed is memory down to 400, and volvts for 4.2 at 1.375, C&Q turned off, everything else was standard. TBH, I've got option's in my Bios im not even sure what they are yet!! using DFI LANPARTY 790GX M2RS.
As for further OC, might try 1.4 though, I think i saw...