Orjannes

Hi! I'm looking to buy a new motherboard because my bus frequency is 100 MHz and the CPU frequency is 4.2 GHz. I know that if the bus frequency is lower then the CPU frequency I need a better mobo. The problem is that I can't find a mobo with the requirements I need (similar bus frequency as the CPU frequency). Can somebody please help me? (Any help would be thankful when there is a summer sale starting soon) Regards, Orjannes