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MSI came up with with very good invention in my opinion. As we all know - every CPU cooler has a fan, a fan which needs additional power supply, which means more power, which means ( if the fan is really shitty ) more temperature. So why not use the CPU temperature to simply give the fan a power supply?

The MSI explain it like this:

When the air in a bellows atop the motherboard becomes hot, it will expand, pushing a piston and rotating a fan. In doing so, the fan cool’s the heatsink immediately. The hot air rapidly cools, sinking in the bellows and pulling the piston back down. Better air piston designs can transfer over 70% of heat power to air power; solar power transfers 20 to 30%, and require more surface and as a result cost.

Very good invention in my opinion, especially, when we need to save energy and all that “save our planet” stuff going around.

More about this can be viewed here