Yeah it lets me change core speed and shader speed, but not memory speed. Though If I move the clockspeed up gpu-z reports it as a memory increase
So I downloaded Asus smart doctor and it let me change everything except for the ram which it actually lowered down to 800 lol. It let me get to 800 core/1600 shader at 1.08v so I'm pretty happy with that. Can you use evga's overclocking software with any brand? I may give that a try next as I don't really like the Asus software (but it works)
Going to start lowering the voltage next and see how low I can keep 800/1600 stable.