I have an Epox EP-8KTA3PRO, KT133A mobo. It has some pretty decent overclocking features, AGP voltage 1.5-2.0 volts, I/O voltage 3.4-3.9 volts, Core voltage to 1.85 in BIOS with +0.1, 0.2, 0.3, and 0.4 volt modifier jumpers on the motherboard so core voltage can go to 2.25 volts max. There are BIOS upgrades to support Athlon XP but I don't know how high off hand. My board has a Tbird 1.0 overclocked to 1.5 Ghz.
<b>I have so many cookies I now have a FAT problem!</b>