08G-P4-6173-KR - 1070 SC User here.
I added +500mhz to memory first day i got the card 3 months past since then and it works just fine.
My problem is i can only add +50mhz to the core even with +55 card crashes and it always hits power and voltage limit no matter overclocked or default.I set %112/92 , +100 volt nothing changes.Eg. Valley starts at GPU boost 2050mhz in 30secs it drops to 1960/1940 territory.
If you're telling me that i got the most dumb silicon then fine but if this is a BIOS problem i hope we can get more juice out of my card.