JuicyFruit its dipswitch 6 on your mobo.All you have to do is turn on 1 switch.The one your talking about is for the VM board.Check out this new link.1:1 will be actually be 3:4 in the bios.There were some problems with the P4B533E that you should read about on the link I gave you.I know its a long thread but have read a few like that over a couple times..LOL.Here is another link and shows how to set your board. Settings