NOTE: The 400mhz FSB on P5B Deluxe as per new bios is a grammatical error when you use a multi lower than 9x, it does not display correctly.....if you boot into Windows and use CPU-Z you will see it is in fact 3.2ghz and just an error on the bios's part. So that being said, treat it as if you would 3.2ghz (8x multi) and so on and so forth.