OK overclocking my card with RivaTuner, for some reason a clock of 648MHz works and is shown as the clock speed in hardware monitoring, but then nothing until 675MHz works? It lets me set them, but the actual clock speed doesn't change on hardware monitoring until I get to 662MHz when the hardware monitor jumps to say its at 675? Meaning I can only have a clock of 648 or 675?
Any ideas?
Any ideas?
