i was able to get to 4.9Ghz at 1.465V set to adaptive+offset voltage
Temps stay under 70C most of the time using prime 95, aida 64, etc
I feel pretty good at leaving it at that, i tried 5Ghz but even 1.51V wasnt enough to keep it stable, so i stopped trying, even though heat wasnt an issue.
I got my GTX 1080TI Founders edition OC +175 on core and +685 on the Memory(might push it a bit higher)
I think if i use the method where you adjust the frequency with the gpu voltage i could squeeze a bit more out of it.
Im testing the system for a few days before overclocking my memory!