Speedfan is usually off. As with PC Wizard 2007 at time, as for my Sempron 2600+ I recieve 12C temperatures, I suggest looking under the Hardware monitor tab in CMOS. They usually have the most accurate temperatures. If they looks an bit high, turn off SMART Fan, Re-Apply thermal compound, or get an copper aftermarket fan.
Otherwise, get an larger case with more air flow and case fans.