At the bottom of a general "220V Cooling Fan" video games, plus a large common hall the size of a coin might look flat 9 mm2 copper lubricated (must be no green patina :). So that it can heat it and PK925 stray running out. "220V Cooling Fan" was converted into approach: first thing polished with a double-sided coin, (be sure to pay attention to grind the plane of division do not exhibit skew), and then in the copper side silicone coated minority, put it firmly stuck at the bottom center of the heat sink (heat sink with copper touch focus or else leave any gaps), together with the other side should also pay attention to the flatness of the CPU to ensure that the look and touch of rigor. So your "220V Cooling Fan" is basically perfect virtue. Very simple now!