OK so after playing around a bit I managed to hit this @1.6V Northbridge:
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I'm told that 1.6V is OK for air :Whistle: so it looks like the damage is minimal, but this is incredibly strange compared to what I was having before. I also decided to check if the CPU would clock as high as it did, after a few runs I got this:
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So I take it the board or the CPU didnt suffer too badly?