GA-P35-DS3 - manual FSB Clock problem

Hi !

I have a GA-P35-DS3 motherboard, C2D E4600 2,4GHz, 2x2GB OCZ DUAL,
Palit Geforce 8600GT.
In BIOS -> Inteligent Tweaker i have the following options:
CPU Host Clock Control: Disable
CPU Host Frequency: 200 (read only)
CPU Clock Ratio: 12x

OK - i want to increse FSB so CPU Host Clock Control change to
Enabled.
CPU Host Frequency is now enabled, but i nothing change - still I have
a 200 MHz FSB.
Save and Exit BIOS, restart...post screen...restart...BIOS restorem
previously settings
I can't manualy change FSB !

The same problem is with PCI Express Frequency. If I manually change
this option to 100 (default !), I have a same problem, restart and
restored settings

I have a newest BIOS. Does somebody have similar problem?

Sorry for my English.

Check out the TweakTown Gigabyte Forum.
There is a section on overclocking and general BIOS tweaking that may
prove helpful.
http://forums.tweaktown.com/f69/