if that a burn in temp it a good temp there for an over clock. with most cpu and gpu it when they start pushing the high 70c and higher that the temps are an issue. if your gaming and your temps are under 60c your doing good.
Nah, most Intel CPUs can hit 70+C, AMD is different.
What CPU is it btw? If its a Phenom II x4, the max safe temp is 62c, never pass that unless you want to see some instability. Most if not all Phenom II with a max safe temp of 62c will shutdown the system just after 69C, Thermal trip. My older Phenom II x4 940 shutdown at 69C, My x6 1100T on a different board shutdown at 69C.