Started with K6-200. Adjusted Bus to 75mhz and multiplier to 3.5. Used a fairly big fan/heatsink for socket 7. So actually... I gained perfoemance 2 ways. Bus and Mhz. I did up the voltage 1 tenth of a volt just to ensure stabillity. There seems to be no problems...yet! Oh 1 more thing... I have the case off of the computer.