Bios Mods -The Best BIOS Update and Modification Source

Hello,
Is it possible to modify bios to change discrete gpu voltage? mobile fermi chips don`t allow to change it through any utilities, i used phoenixtool to extract bios settings module: FE3542FE-C1D3-4EF8-657C-8048606FF670_819.ROM, opened it with Universal IFR Extractor, but didn`t find voltages there, also extracted videomodule 05F7AA70-A64A-432C-8CEE-4CDECB8671D7_1870.ROM and there wasn`t any settings at all, maybe i`m looking wrong places i have ch341a so flashing isn`t a problem. 
Thanks in advance.
Here`s rar with full bios, extracted settings module and videomodule.

Solved it! I used phoenixtool259+hewprsa_universal, kepler bios tweaker 1.27, total commander and in my case spi programmer because of rsa flash blocking in my bios version.
1. disassemble bios into modules using phoenix tool
2. find gpu settings modules in DUMP folder created by phoenix tool with total commander using gpu id, found only 2 modules 62kb size, but there`s third 62kb module in DUMP folder which also needs editing

3. here`s 3 modules 62kb size inside DUMP folder

4. open each of 3 modules with kepler bios tweaker(fermi tweaker didn`t recognize them although 630m gf108 is fermi architecture chip), i downed all min and max clk voltages and P0 state voltage by 80mV

5.edit checksum of each module so it was same as before modding

6.assemble bios and flash it. Done.
In my case temperature dropped by 8-10 celcius and gpu and memory performance remained same and stable)

Modded bios attached