I have an AMD athlon ii x4 645 3.1GHz processor and an HD Radeon 6770 graphics card (1GB) so how much can i overclock? I have no overclocking experience whatsoever but i would like to just overclock a little bit. On my computers front it says "cooler master" and i have 2 fans at the back and at the side. My idle temperature for my graphics card is: 30-40 degrees Celsius idle and about 60-70 in-game. My processor is 20-30 degrees idle and 40-50 degrees in-game.
How big of a difference will a little bit of overclocking do and how much can i overclock?