just want to add my $.02 here. Just got another kit of 2x1gb crucial ballistix. i'm running 4 sticks of ballistix on a foxconn c51 and a 3600+ brisbane. the memories are running at 489Mhz at 5-5-5-12 2T. it's been pretty stable so far. 5+ hours of memtest and no errors. i think i can push the mem speed higher, but the 3600+ doesn't like it. how do you calculate the correct bus speed on a brisbane with the odd multi of 9.5? when i boot up the c51, i see current memory speed of 977, is that correct? thanks.