If you change the clk frequency to 75Mhz. I recommend you change the cpu multiplier to 3.0 that will slow the cpu to 225Mhz. I don't think you will have a heat problem. If the system becomes unstable(freezes) simply turn it off and put the jumpers back where they were. You should see a gain of between 10 to 20% at the system level. But you may not see the change in windows! But you will see a change in windows when you install that cacheman program!
Come see me at Systematic Investing group #board-966 lets talk formula plans.
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