If it's an AMD model you would want it down a little further to see a high temp at idle with a stock heat sink/fan at about 44-46C with a load getting into the low 50Cs. For a 3rd party cooler you should drop below 40C when idle into the mid to high 40s at most depending on how well the aftermarket cooling is. If you plan on OCing you will want to see even lower temps to keep it from cooking when being stressed. Gaming and other large apps will put a good load on a cpu. Intel cpus are known to run warmer as a rule while any low cpu temps are good especially when pushing it. For a good reference on the maximum temps allowed for various make and model cpus go to
CPU maximum temperatures