I guess you got the SOC from Gigabyte.
Well... I got mine to 950, 1300 and GPU voltage had to move it to 1.12 (only increased 0.01 since for some reason it didnt work with stock volt, only the GPU volt btw, the mem volt is @ stock), temps were in the worst case at 72-73°C (tested with some benchs). I want just test it with crysis today (I O.C. it just yesterday at night) to see how bad it goes after 1-2hrs of game.