Not sure m8. Might want to ask some Aus* m8s.

BTW: Sorry, i didn't had tim to un-pack my PSU to take dimensions. My job is killing me. But im sure you can find such infos on Ultra's site or in any review of the PSU
that's kool ur busy that's understandable...Your room look's sik...I rekon you could use a new chair like a nice big leather one...Your got 2 gtx right are you getting a big monitor? say a 30inch to give them cards enough work...