Good thread!!
There's a bunch of boards that would work with that P///. I have a P/// 600E, so I'm interested in the same things in a board you are....
Right now, it's running on a Asus P3C2000. This is a bugger of a board, kinda finicky with the ram it will run, and, because of the i820 chipset, has the Memory Translator Hub, which slows down the memory somewhat.
The P/// ran well on my Soyo 6BA+III, but the Soyo didn't have the vcore flexibility (only + 10% max, 1.65v + 10% = 1.81v) that the Asus has. I did run the P/// at about 850 MHz on the Soyo, but I knew a bit more vcore would get much better results. I believe the 6BA+100 will have the same vcore options as the +III and +IV does. (default, +2.5%, 5%, 7.5%, and 10%) The good part of the +100 is the ATA100 capability.
I've never owned an Abit board, so I'm not 100% sure on the vcore options, but I really like the options available in the SoftMenu III.....FSB settings from 83 to 200 one FSB at a time. Good BIOS. Again, not sure on the vcore settings available, though.
Asus......I'm looking long and hard at the SH6 myself. Looks to be a killer mobo, but try and find one!! I can't seem to locate one that the seller doesn't want rights to my firstborn for.... I've seen this selling for $180 or more....YIKES!! More than I want to spend.
IMHO, the biggest determining factor I look for is the vcore adjustability. This is critical in the overclocking of intel processors.
Yeah, The Via Apollo Pro 133 is not the best in the world. I had this on an A-Trend mobo a while back. Does indeed kill the memory bandwidth. They improved on this, with the 133a, but it still can't hold a candle to the BX chipsets.
Decisions, decisions.... This gives you an idea on what I look for. Having the 600E (which run at 133 FSB, is basically the equivalent of your 800EB), I have very similar requirements. Hope this helps you determine what you need.... Good luck, and happy board hunting...
Mr B