kosmos_oc :
Wich software should I use to overclock Gigbyte ATI Radeon HD 4670 with 512MB? How to rise voltage of GPU? And wich frequency and voltage should I aim for and not fry my GPU?
Hi. I have a Radeon 4670 GPU in my PC. And yes you can overclock the 4670. You can easily unlock the factory settings using this ATI/NVIDIA overclocking utility:
http://www.techpowerup.com/atitool/
I hope this helps you some. Happy gaming!