Hi there, I'm also a Lenovo Z570 user. I've the gt540m version (which is easier to overclock by software) and i'd like to boost the gpu core voltage of my gpu, but it is not accessible by bios. I'd like to change it from 0.980V to 1.000V. And if you can provide 2 versions including 1.000V and 1.020V versions that would be great. You may just unlock the settings menu in bios too and that would be awesome.