Uhhmm, the newest Via KT266A chipsets appear to have the greater inherent stability over the older AMD761 chipsets that you would expect from a matured design. I just bought a KR7A-Raid because I was (A) convinced that the limitations of the A7M266 as the most basic of the AMD761 boards warranted an ostensible upgrade and (B) because I had grown irritated with ASUS's increasing complacence about the materials they put in their boards and the system/overclocking options they would support. Frankly, I experienced chronic, mystifying problems with system stability with the A7M266 that I had never encountered with the earlier K7M board.
I could never get my high-quality corsair and crucial dimms to o'c to any significant degree, I've had to turn most settings to Auto, and I appear to have burned out the memory on the old GF2 GTS with constantly playing with the AGP settings. I have yet to discover anything particularly useful that I would want to do with an AMR slot (and given this board's enduring expensiveness, what system integrator would be feckless enough to buy a bunch of these?). Long ago, when the earth was green and we all lived in the forest, I had great experiences with the BH6 ver. 1. So what the he11, I figured I'd give Abit another go.