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Whats special about the P5 state ? Also are all your Vega56 flashed to 64?
I found that by limiting the Vegas to only use the P5 state I could use a lower voltage without crashing. My Vega 56's are all flashed with a Vega 64 BIOS.
You are absolutely right. It works. Thanks for the tip. Did you also flash non reference Vega56(Hynix) to 64? Can this be done?