Yes, vcore or CPU VID will refer to the CPU voltage...I would say you don't wanna go above 1.6v unless you're doing so for benchmark purposes. You also have to remember that some motherboards have the option for "fallback" stability vcore...for example, DFI has the option of vcore + % so for example you have 1.55vcore + 109% there are times when your core have almost 1.7v running through it