The PSU has worked great on my other machine and similarly well on the machine in question. In addition, ATI actually picks that PSU as it's recommended Crossfire PSU:
Click on the X1900 link.
With the power spec does that mean 30A on 1 rail or on them all together? My understanding is that it's for all of them together. That's why that PSU should have enough juice for 2 of those cards.
Also, is there anyway to know that the card IS actually getting enough power?
The fan spins up, is that a sign? Also, where the 2x3 plug connects it turns red for a sec when the comp first turns on.
In addition, the BFG Nvidia 7800 GTOC is working great with that PSU.
If there was a clear way to determine it is the PSU I would gladly get something else. However, it seems that ATI themself recommend it.
Thanks to all of you for the responses. Any way to tell that it is actually the PSU or further suggestions?