MSI usually not very well known for innovations in the Motherboard area of the market has come up with a design that i think it will sure influence other Motherboard manufacturers in the future. Because the race to more efficient and green electronics has started its just a matter of time until all motherboards will use solutions like this one. Talking about the MSI’s Stirling Engine its simple, the CPU drives its own fan. MSI’s Air Power Cooler uses the energy inherent in the expansion of air as it warms up to drive a fan. As the CPU gets hot, it causes air in a piston to expand. That pushes out the piston rod, which turns the fan rotor, pulling air over a heatpipe-fed heatsink. The heatsing helps cool the piston, so the air inside becomes more dense, pulling the piston rod back to its original position.

MSI’s Stirling Engine-based cooler (powereless) in theory

The mechanism is well known and documented as the Stirling Engine and its named after its creator, Scottish engineer Robert Stirling, who described it in 1816, though the principles on which his machine were based were uncovered in the 17th Century.

MSI’s Stirling Engine-based cooler (powereless) in practice on a motherboard

MSI’s version can transfer over 70 per cent of the heat power to motive power, the company claimed, and it doesn’t use a drop of electricity to drive the fan. It’s not totally efficient, which is why it won’t run in perpetuity, but it is kicked into motion simply by the heat generated by the chip.

MSI has built the powerless cooler and placed it on a motherboard, which it’ll demo at the CeBIT show in Hanover, next week.