The reason I asked is because I am on my 2nd A64 mobo using an OEM 3200+ cpu; there is a noticeable difference in the cpu speeds.
The first board was a Chaintech SK8T800 and the cpu ran at 1980Mhz at default settings. Now I have the cpu installed in an Abit KV8 Pro and the cpu runs at 1840 with default settings.
EDIT: When I say noticeable I do mean 'visually', as in what you see in 'My Computer' properties