you could possible burn something out. I think something like a 66Mhz oscillator would be more realistic. Even though those CPUs overclock, 40 and 50Mhz will be really pushing it. Especially if it only has a 25Mhz CPU Beginning speed. That's essentiall the same thing as taking a 3.0Ghz XEON and pushing it to 12Ghz. Not going to happen...