Improving the video card with BIOS

hello, I had read something about improving the video card with BIOS ...

So someone like me explain what?

It is not specific but what you really want or want, if you mean to give more video on your computer BIOS enters it and move it to the maximum option you have, but that does not mean that everything perfect really the difference is minimal.

I read that we can RAM to the video memory and with it an increase that if 32 to 64 ...

that's what I want to know ...
and I want to know how it is done.

I think it is there, if we can enter the bios and advanced searching options