So far it looks good!
Currently doing 4.4GHz HT on with 1.45v and 32C ambient(89F). UCLK seems a *little* better than my 970, but only marginally.
My 970 needed 1.5v to hit 4.4, and I never did it with an ambient this high.
Core Temps are topping out at 91C with coolant temp of 39C.
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