Any pencil mod on Vcore of HD4770?

[Thomaslau]

It seems the GPU needs more voltage to overclock than memory does. And there will cause too hot for the GDDR5 if too much voltage added. It is necessary to find a way for that mod to achieve highest overclock.
Mine is now 950/1115 at 1.127V

 

[Schmide]

It's just my intuition. I don't think you're going to get a great overclock from this early a stepping. It takes time to refine the process.