"You can manipulate the "Clock by Slight Adjust" number to a number ranging from 133-166, and 100-132MHz if you are using a 100MHz FSB Athlon or Duron. The best I was able to do was 142MHz. I did hit 145Mhz, but 3DMark 2001 would crash in about a minute. So a 9MHz boost isn't what I call a super overclock, but you will still see some benefit."
FULL STORY @ MRPCPRO (http://www.mrpcpro.com/reviews/7KTA1/7kta1-intro.htm)