stock or OC? Stock clocks were 250/400 but it can reach 340/506, i have it OCed now at 295/485.
The reason i dont keep it at 340/506 is cuz i dont want it to burn up, though it didnt show any sign of overheating. I benched it at 340/506 and got 11,706 marks on 3DMark 01 SE.