I'm not sure about what motherboard to use for dual PIII...you could check www.overclockers.com. I have an ABIT vh6-t and it is great...especially the SoftMenuIII that allows you to do jumper changers thru software...great for overclockers.You can check out some overclocking benchmarks here...Notice that the P3 sdram overclocked beats ddr on athlon. This processor screams. It also only cost around $300 to build since I picked up many parts free at Circuit City, CompUSA, OfficeMax, Office depot.
http://www.hothardware.com/hh_files/CCAM/tualatin(4).htm

[This message has been edited by WS (edited 05-24-2002).]