Welcome to the forums!
The Q8300 is a fine CPU.
As to overheating...
Depends on where you are sticking it and what you are doing with it.
If you are sticking it in a case with no ventilation and heavily overclock it using the stock Hs, yes it will overheat.
If your case case enough airflow and you run it at stock or use a good aftermarket cooler when overclocking it will not overheat.