LLC does not interfere with vcore in H-E and B-E because of internal voltage regulator, it only affects input voltage.
If you wanna low down that vcore voltage (6950x), u got to decrease the selected one to 1.30v more or less, so that the regulator has a lower point. But you will have to check if it is enough for the desired frequency.
The best program under OS to check the vcore voltage is Aida64, not CPU-Z which only shows VID selection.
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