I have an old Athlon 64 x2 4800+ It's meant to run at 2.5Ghz, but I can get it up to 3Ghz. I overclock by changing my FSB speed, and had to up my ram voltage to 1.9v to get it stable at 2.9Ghz. So now I try to be happy with 2.85Ghz with the upped voltage until I get a new CPU. It doesn't matter really if this CPU fries or explodes in a spectacular way Unless I'm not mistaken, changing the FSB speed overclocks everything, not just the CPU. The thing is, I am getting some artefacts in games when I overclock it. I have a radeon HD 6850. This card is meant to have a huge overclocking headroom - but I have a version which was pre-overclocked. Powercolour 6850 PCS+, originally at 820Mhz. I can't change the voltage on this card because it's powercolour, and I don't want to either, because I don't want to void the warranty. For example, skyrim runs really fast at 1920x1080@High, but I sometimes get random texture flickering. One time the ingame menu (ESC) was with a completely green background. I don't like it and I hope I'm not damaging this card. Is it possible to overclock my CPU (and maybe RAM) without overclocking my graphics card?