I have overclocked my sapphire radeon 6850 vapor-x : GPU:1000Mhz , Memory 4500Mhz , VDDC:1250
If I increase the GPU voltage to 1251 it crashes.
When I play a game whit this settings it is ok, but if I increase memory clock to 4600Mhz effective (1150Mhz) I start to se artefacts and the picture on the screen is not calibrated to the screen, parts of screen are black and in-game textures are not full. I set the core clock to 775Mhz which is standard for this card and increased memory to 4600Mhz but it is still the same. I am confused because I have seen people on other sites to overclock the memory to 5200Mhz. They all had an 2x6-pin version. Is the lack of power that causes poor memory OC.
If I increase the GPU voltage to 1251 it crashes.
When I play a game whit this settings it is ok, but if I increase memory clock to 4600Mhz effective (1150Mhz) I start to se artefacts and the picture on the screen is not calibrated to the screen, parts of screen are black and in-game textures are not full. I set the core clock to 775Mhz which is standard for this card and increased memory to 4600Mhz but it is still the same. I am confused because I have seen people on other sites to overclock the memory to 5200Mhz. They all had an 2x6-pin version. Is the lack of power that causes poor memory OC.