Sorry, I meant undervolt yeah. Nah, I have a MSI GP73 Leopard 8RE
For the MSI GP73 Leopard, a combination of four keystrokes in a specific order, while being in the bios, will give you an access to the "unlocked bios" with some extra menus and a lot more options.
It's still possible to unlock the bios for other models, but you will need some serious bios editing skills to achieve that.
Here is my screenshot as of 10 minutes ago :
The bios is not unlocked, and yes I'm stable at -201mv, highest is 1251cb on a previous run with -202mv. I might be able to hit 1280+ with the bios being unlocked using specific values. This is a true golden chip.