from personal experience i can tell you this
abit BX6-2 and BH6 dont work very well at all with the tualatin
Tyan trinity 400 does work very well
I will be testing and asus P3B-f tomorrow, the guy i bought it from said it worked fine with tualatin and i believe him
dual boards that work with tualatin?
supermicro makes a couple, but remember only the P3-s tualatin with 512k cache works in SMP, the 256k cache p3 and the celerons do not