Note for those running heavy oc'ed Quadfire 4890
Whem making the Classified I did take precaution to increase trace thickness for the 4 PCIE slots for the 3 groups of power. As before when overclocking quad fire 3870 I found they eat a lot through pcie slots.
This way the trace does not burn up, or restrain cards oc in quad fire.
However as there are only 2 +12v yellow wires, the connectors thus get hot at the 24pin ATX.
I myself have melted the 24 pin ATX connector when running 4 x 4890 oc. I dunno why these cards draw so much from slots, the nvidia cards dont seem to :D
Anyways if you are one of those quad fire guys this may help you.
http://f.imagehost.org/0096/Image001_10.jpg
http://f.imagehost.org/0043/Image002.jpg
This should fix you up.