Just a little "teaser", if you will.
433's have a clock multiplier of 6.5, the "best" that the BP6 will do, stable, is 110 mhz fsb. So, this gives us a "possible" 6.5 X 110 = 721.666.
OBTW, this has been done with "active" cooling, large heat sinks, Peltiers, water bolcks, etc.
I am in the process of doing just that. Lapping, large heat sinks (GlobalWIN FEP32's,72 watt Peltiers-air-cooled and a "mini-Peltier" on the BX chip set) along with the one CAP mod and replacing the voltage regulator (I have BP6, ver. #1 board that was previuosly modified for dual PIII's).
BTW, still stable, dual 1100E's, @ 110 FSB, going on 3 years!
You may ask "why?"
Because I love my BP6 as old as it is and it is another chance to "learn"
and that's what it's all about, right? Besides, I just hate it when someone says "you can't do that!"

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regards,
jaybird