What is it exactly that makes it so that you cannot just go faster and faster? what makes the system unstable? Is it lack of power? in which case you need a different PSU. Or is it heat? in which case you need better cooling. Or what? Or is it all your hardware as a whole, where a certain combination can handle all the power better? beats the heck out of me.

I have a 1.4 GHz Athlon and I can only get it stable at 1.466... im hoping heat is my problem, cause I can always get a new case and more cooling.

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My System Specs