ASUS and Intel don't say anything about this being supported, but I want to see if SU thinks it can still be done.
Are all your recent questions all about the same motherboard!?
Anyway, as I said in the previous question you asked - you may be able to if you reflash your BIOS, I managed to get it working - but I could swear that performance took a big hit.
If it isn't supported, I really would not risk it.