A TEC, is of course a Thermo-Electric Cooler. A quick search for TEC, or the Peltier effect on Google will very quickly bring up more information on how this works than you'd ever wanted. Essentially, it is an electric powered heat pump. Typically, when used with a computer's CPU, it is a 40mm ceramic sandwich, that fits in between the CPU heatsink and the CPU itself. The cold side cools the processor and then the heatsink cools the hot side.



Link: Trustedreviews