So I flashed my cards and set the voltage to 1.20v, but I get artifacts even doing it at the same level overclock I got before the flash. So my question is, is there such a thing as too much voltage for the GTX670? I am water cooling and temps have not gone above 46c. According to GPUz I get 1.21v max when benching, so I am wondering if I need to lower the voltage in the CFG file to the default 1.18v. I was hoping the added voltage would allow me to hit 1254Mhz on the GPU, but if it is going to cause artifacts then there is no point. By the way, this is easy as pie to do, love the program still, thank you for all the effort CrazyNutz.