Bios Mods -The Best BIOS Update and Modification Source

Hi, I'm new here.
I would like to know if this BIOS has some hidden settings, like voltage, fan speed or spread spectrum, since i can only edit FSB and other bus speeds and the cpu fan is a bit noisy.
8SIML-FE.
The motherboard is a Gigabyte GA-8SIML rev. 1.0 and the cpu is a Pentium 4a 2.5GHz running at 2.85GHz, but I want to try to push it further. I've seen on some reviews of this motherboard and the voltage option and spread spectrum can be modified.
Thanks in advance

I have taken a look into to the file and it seems, that the voltage option should be shown, but in the setup menu it shows only frequency. It seems like the file is corrupted.
This is the link to a previous bios: 8SIML FD
And this is a link to the first versión:8SIML FC
I hope that you can find a solution, because I couldn't.
Thanks in advance

Bump.

Ok, the Setup menu shoulded give voltage option, but the BIOS in Gigabyte's website has a bug in this part.
I hope you can solve this.