Hi i have the amd hd 7870 and most of the games run like 20-30 fps,why does it,i hate it when i buy n new graphics and everything still doesnt run like i want it to on max settings.My questions is,is it even a good card or not?Is there a way to get better fps and how safe is it to oc my graphics and if so,to what can i set it to?My cpu is i5-2400 and i have 8gig ram and im runnig all my games on max with 1920 x 1080 resolution.please help,its like most of my games like borderlands 2,skyrim,fallout 3,fallout new vegas,far cry 3 and hitman absolution,oh and i have the latest drivers also.plz help.