"266 Front Side Bus and DDR will shortly become the standard platforms for AMD. However because of the amount of PC100/133 floating around in the market, users are looking for something in between. Users like the idea of the 133/266 FSB on AMD processors while still using their current memory. This is where the VIA KT133 A steps in."
FULL STORY @ VIAHARDWARE (http://www.viahardware.com/kt133a.shtm)