By messing with the voltages I didn't mean you have to push them up all that high.
What is the Idea of watching a youtube tutorial? is something way beyond me. You need to read , understand and then try out the stuff.... not just watch some geek do it and then try it yourself.
Every chip on in the rig is different to another's who may have the identical stuff.
You have to start everything from it's least value and then pump it up step by step, actually, one setting is pumped up step by step till it reaches it's max, then the next setting is increased till it's max is achieved.
It's not like pressing a few buttons and jumping frequencies to the next level...
Read through the link I posted earlier, it'll give you a reference model to what you can attain and how.
There is no magical way as to just copy the same setting and get you rig to work the same way...