@Boot_WB:
I also have a revision 2 060 card with SCSI (200Mhz 603e) that will only "sometimes" work with the same Grex1200 board. 80% of times it doesn't want to detect Grex. Definitely due to lack of power, as I'm 100% sure that its BVision mini-connector works fine, as if I use BVision I get no problems whatsoever.
It seems that even if revision 2, if a BPPC card is too old, it very well may not have an efficient power management in order to whitstand Grex, since after all old hardware is old hardware and it is performing less and less efficient as the years go by. :-(