There is a straight answer and it's been made clear several hundred times on this site alone lol
Keep the QPI/VTT .05v below cpu vcore, Intels limit is 1.35v VTT and 1.55vcore, but there is a cushion on that figure; mine in practice is 1.45v vtt and 1.6v core. This is water cooled and voltages like this shouldn't be used for long term usage no matter what cooling.
Use my advice at your own risk![]()
Bookmarks