Nice build! What settings do you have changed with atitweak?
atitweak -e 900 -P 2 -A all
atitweak -m 600 -P 2 -A all
atitweak -f 65 -A all
OC'ed the core a bit and took down the memory otherwise I'd blow the circuit at well over 15 Amps and more than 125 Volts
I can't seem to stabilize under 600MHz on the memory though