Your fine. Don't even be concerned unless temps are well over 40c. with your Inter chip and a mild overclocking. Normal for AMD chips is even hotter.
Keep in mind though that the further you push the Mhz of your chip, the cooler it will need to be. My system runs fine at 15c but is very unstable when temps get to 25c. Normally the computer will give you plenty of indications ( mine likes to spontaneously re-boot ) if you are trying to push too far.