I have an abit bf6 p3 700 fsb 100 this works fine my sdram(133) 3x128 , before I had a p3 660 fsb133 and I had to replace it because of reset problems (same chipset 440bx).
I tried everything with the p3 660 , changing the 660 to 6x100 , even to 5x100.
500E (5x100fsb) , was the best result but still gave me errors .