HardOCP heeft een artikeltje gebouwd rond hun overgeklokte PIII-650, die dankzij peltier koeling stabiel draait op 806MHz.
I had to go Peltier. Pretty lightweight though. 33W, 15V Peltier running at only 7 volts. No below zero temperatures, no condensation, no insulation. Just had the chip, a small 1 inch square plate of aluminum, the 1 inch square Peltier and the stock heatsink, all sandwiched & joined together.Here is the peltier sandwich and a close-up:
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