I NEVER had any trouble with my BPPC / BVISION on an unfixed 1d4 AT mobo. NEVER period and didnt have to attach an extra supply to the mobo.
Works for some dunno why... mine was even clocked to 280Mhz with a 66Mhz 060.
This was in a Infinitiv Zorro2 Tower as well with powerflyer, multiface 3, Ethernet, Whippet serial etc etc.
Never experienced any of the timing problems people witter on about either.