This is getting ... interesting.

So you are saying CPU-Z is correct and all else is wrong. Can you validate any of those CPU-Z results with high NB?

If your NB is actually running high, you should have very high EVEREST Mem bandwidth and low latency, sub 47ns. I've tested the high NB between 1.8GHz and 2.2GHz at same everything to see this effect. So, what do you get?

Thanks as usual.