Hi there, I have an AMD K6 2-550. It is rated @ 2.3v. I can only get it to 578x105FSB @ 2.6v. I should be able to get it to at least 605x110 or 600x120 FSB but it is not stable and win crashes with the blue screen of death with a damn VXD error. What is the max volt I should push? Please read all that I have written to Duckman today. It might help you understand. Going nuts!!