"This chipset was a big surprise to the overclockers market. While we all dreamed of DDR months ago we didn't even give a second thought to the KT133A chipset that was only hinted at. Of course VIA had an ace under their sleeve. The KT133A is a very slightly revised version of the KT133 offering current and future AMD Thunderbird / Duron CPUs 133MHz DDR bus speeds. What this means for you is that your current CPUs can run at the 133mhz bus easily; it just requires you to clock down your multiplier. But from my experience ( 2 Durons / 2 Thunderbirds ) the AMD cpus are all capable of running the 133MHz bus using there locked multiplier, effectively overclocking your CPU without you doing anything!"
FULL STORY @ ATHLONOC (http://www.athlonoc.com/k7vtapro1.htm)