I was just about to buy my kk266's when I found this. I've called Iwill tech support (949)753-5488 and have asked them if it is a bios tweak or an actual hardware issue and I got the "dunno" response. Why do they have tech support in the US if all the knowledge is in Taiwan? They should just route me to an English speaking person in Taiwan. Anyway, they said it'll be a couple days before they know so I'm counting on someone knowledgeable to know the answer. I pulled the following off of viahardwares site.
"Trailing the Mustang by a month, Palomino will bring the second-gen Athlon core to the mainstream/performance desktop market. Built to compete directly with Intel's Pentium 4, Palomino will include the same enhancements as the Mustang, minus a large amount of L2 cache, and support for the 770 chipset. Initially debuting with 512K of L2 running at full speed, as opposed to Pentium 4's 256k, Palomino already has a leg up. Like the Mustang, the second-gen Athlon core allows increased clock speed on an identical process, allowing 1.5GHz using AMD's standard copper .18Micron process. Greater speeds will be possible with a die shrink to .13Micron, occurring in Q3 2001. Some versions will share the Mustang's 133MHz DDR FSB. This processor will also have reduced power consumption considerably, allowing mobile Athlon platforms for the very first time.
Chipset support is much more available, by virtue of the Palomino's use of the standard SocketA configuration. Supporting chipsets include AMD's 760, 760MP, VIA's KX266, and older PC133 platforms, such as VIA's KT133. Supporting up to 2 processors in SMP with either 760MP or KX266, Palomino shoots straight for Intel's stranglehold on the corporate workstation market."
This really makes it interesting as they mention that the power consumption will drop considerably which implies voltage and I've seen specs on another site that listed the voltage at 1.3volts. Uh-oh. What to do?
Good news...
Can upgrade to Athlon II or Palomino or whatever they're going to call it because it looks like the KT133 and hence KT133A chipset will work and it'll be pin compatible to socket A !!
Bad news...
If you buy anything other than the Abit KT7A you might not be able to use them because the voltage doesn't drop lower than 1.5 volts (most KT133A boards). This is ONLY bad news if you need more than a BIOS tweak to drop the voltage.
Quick...does anyone know what Abit did with the BX chipsets. They were the only ones that allowed you to use the current board when you went from PII's to PIII's because they had a lower starting voltage than everyone else. Does anyone remember if this was a BIOS fix on their part or not?