But isn't there a way to change FSB in BIOS? Because using Eeectl in Windows, I can easily reach 1Ghz. I've read that in some previous eeepc BIOS, CPU was @900 Mhz, but in later BIOS it was underlocked to 630Mhz. That would be great to set cpu speed in BIOS, without using any software solution.
Seems not , theres only a software solution available
If we say no hidden options it means that you are stuck with the bios options you can see , also make sure you aare using the most up to date bios as this may have overclocking (Eg one of the MSI Wind bioses didnt have overclocking till a later version was released)