I've got the same mb & cpu (Monarch oem) and I'm using OCZ 2-3-2-6 1T DDR400 2x512 memory. If I set the ldt/fsb 3x, cpu mult 6x, mem to 100mhz( really 150), I can get it to boot and run fine at 300mhz. (6x, 1800) Following step 2 of the A64 oc guide, I can't get the cpu to work past 215, x9 1935...