Well you aren't gonna find any P4 based MP sys cheap. P4's can't run in SMP. Only the P4 based Xeon can, but it's very expensive. $1000 for 2x1.7GHz Xeon's, loads of bucks for RDRAM depending on how much,and then at least $500 more around $700 for the only Xeon mobo (IWill DX400-SN), plus don't forget a heavy p/s so u'd be better off going with a AMD 760MP system. That would be more around $250-350 for the mobo, if u need 1GB of RAM, then you can have it for $160 by getting 4x256MB sticks from Crucial, and $250 for 2x1.4GHz Athlon's. So I'd go AMD MP sys.