6xHD5870 sat on top of an old SC440 2x650W+305W PSU with 2x3 port PCIe switches - having problems getting all 6 working so I'll probably be split them up later today.
Chris.
Nice! I'm interested to know if you can manage to get all 6 running from one mobo. If you can close off the case (with slots for the PCIe wiring) and arrange the extra PSUs a bit better (so everything is blowing hot air in the same direction), you could pretty easily get all air flowing from front to rear and make a little home made setup to vent all the hot air away. Did you do anything special such that all those cards aren't drawing power from the PCIe bus?