The only bios options related to memory are the options such as
"configure SDRAM times by speed Enable/Disable"
If disable there are options like SDRAM PH limit and the like.
Ive been poking around my manual but have seen no mention of anything Jumper wise relating to memory but I will look again.
Can you think of any other programs that could check the memory speed?
motherboard may have jumpers for selecting the FSB speed
FSB speed is the same thing as memory frequency?
I know of a few FSB tweaking utils, ill check them out aswell I guess.