Hi Torben,
I would have gone along with that 10 years ago. At that timer ASUS' customer service was outstanding. It has deteriorated steadily and is now at almost zero.
ASUS mainboards were a long time considered to be the 'Mercedes' class mainboards, which doesn't appy either anymore.
I purchased a mainboard to accomodate an AMD 2.4GHz CPU two years ago. The BIOS recognized an AMD 1.8GHz CPU. Using the overclocking feature of the CMOS-setup the system haltet at CPU speeds higher than 1,660MHz because of "heavy overclocking".
I tried to get a satisfactory solution at ASUS with absolutely no reply (four attempts)!
Hans