NB 2.4GHz@1.1VTypo?
I'd try ACC 0+ and 2+ first see if you can go lower with the voltage. My chip does not work without ACC above ~3.15GHz. I need ~1.45V and ACC 0+ or 2+ for 3.2GHz. Above 3.2GHz 0+ is no longer stable here but 2+ is. But this can vary between chips. I tested low voltage with ACC at stock (2.6GHz). With ACC -2 I found 1.25V but with 0+ it was 1.1825V. So 0+ is best for me from ~2.6GHz-3.1GHz and 2+ for 3.2-3.4GHz, above I used 4+ but that is for benching only.
To find the best ACC value find the lowest stable voltage with ACC off and then test a few ACC values with a lower voltage. Use the one with the lowest requirement. I'd use a lower NB multi and a higher NB voltage to sort out instabilities from that side while you test ACC.
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