I built this machine with the components listed below a few months ago as a basic work workhorse. I never really paid attention to it but when i installed easy tune 6 the memory shows as PC 2 - 6400 (400 MHZ) not at 800 MHZ. any ideas on why this is ?
Go into the BIOS with a <DEL> at the first POST screen; on the "Advanced BIOS Features" page, set "AMD K8 Cool&Quiet control" to "Disabled"; your system is likely 'down-clocking' to save energy...