I don't believe it has any real correlation with an acceptable vCore.
VID just says what the "possible" values of a chip are. It doesn't mean that there are any produced that have a VID of anywhere near 1.52 or .25. All that it means is that when checked, that is the range of VID that you could get back. Nothing more. VID is used by the motherboard (before the beep) to determine how much voltage that particular CPU requires to boot.
I think of it as a programming issue. They got to put a range in their so the motherboard knows what a valid range is and is configured to be able to handle the POSSIBLE range of values coming back.
That has NOTHING to do with whether it is safe for a CPU with a VID of 1.1 to have 1.52 pumped through it.
Look at it the other way, do people think that there are chips out there that can run at stock at .25volts?Edited by gooddog - 1/18/11 at 9:33pm