Max stable fsb on p4x400 chipset?

Hi,
it's my 1st post here,

Do anyone know what kind of fsb (100% stable) is possible on p4x400 chipsets? Im running now (since nearly a year) a 2.0A at 138fsb and its absolutely stable.
Now I would like to switch to 533psb cpu (no $ for new mobo, ram and 800fsb cpu) and overclock it to about 166-170 fsb, but I dont know if my p4x400 will run stable at these speeds... Anyone knows it?
thanks for any help

I think around 150MHz is all the fsb you can realistically expect from that motherboard, but of course your mileage may vary. I think your 2.0a is a very suitable cpu for that board.