Default [Q] Gpu Steps on Gustavo_s Kernel

Hello to everyone! i want to set this Gpu steps on my SGS2, but i dont know what voltage i need to set for every gpu step, to avoid freezing, so, please help me

Step 1 - 160 Mhz
Step 2 - 200 Mhz
Step 3 - 267 Mhz
Step 4 - 400 Mhz

Voltage Step 1 - ?
Voltage Step 2 - ?
Voltage Step 3 - ?
Voltage Step 4 - ?

Big THX!
_______________________
Samsung Galaxy S2 i9100 made Vietnam
Cyanogen Mod 11 Official