"The AX34 has a major drawback which may be able to be fixed via a BIOS
update, but at the moment - when you change FSB ranges the voltage resets to
default. Now imagine this scenaria. You have a Celeron 566 and in order to
POST at 100mhz (850) it needs 1.6volts, and because it resets it just won't
do it. You may have a lovely 566@850 using 1.7volts on one board but you
won't be able to run it on this unless you can POST at the default voltage
in order to set it. To an overclocker, this is a major drawback."
FULL STORY @ SPODESABODE (http://www.spodesabode.com/articles/ax34v3s/index.html)