Abstract: A heat dissipation apparatus for circuit boards includes a heat transfer plate, at least one heat transfer tube located on the heat transfer plate, a first radiator located on the heat transfer plate, a shell mounted onto the heat transfer plate, an airflow generator located in the shell, at least one latch member latching on the heat transfer plate, and a filter located on the shell. The heat dissipation apparatus is mounted onto a circuit board (such as, but not limited to, interface card, processor circuit board) for discharging heat generated by various elements to ensure stable operations of the elements.

Abstract: An apparatus for programmably converting the operating voltage of a CPU & chipset by means of the firmware programmably setting the operating voltage, instead of by means of adjusting jumpers, is disclosed. The apparatus includes an address decoder unit, a programmable data memory, a DC to DC converter and a feedback resistance switching circuit. In operation, the computer inputs an address signal and a data signal required for changing the operating voltage to the address decoder unit. After being decoded, the data is written into the programmable data memory. Then the programmable data memory outputs a selection signal to change the internal resistance of the feedback resistance switching circuit, thereby to convert the output voltage of the DC to DC converter.

Abstract: An apparatus and method for switching the operating frequency of a computer host board by setting on a screen of the computer is disclosed. The apparatus and method use a frequency selection controller, instead of a switch or jumper selector used in a conventional apparatus and method, to control a frequency doubling factor required for the CPU and system chip set and a frequency selection signal output to a frequency generator.