renz496
Champion
The restriction is more on extreme voltage. Turbo boost 3 will give more fine tune voltage control but they will still within the limit allowed by nvidia to ensure product longetivity. Even if board partner still making their "extreme overclocked" card they still fall in line with nvidia allowed range of voltage. Hence the existence of modded BIOS to truly push the card to it's real limit (though they break ypur warranty 😀)