In most cases where a chipset only produces anough heat to run the fan then that needs to be the point where the chipset needs the extra cooling. If ambient temp is 25C and the Stirling needs a 25C differential to operate then that means the chipset will need to rise to 50C to get extra cooling. Considering that chipsets have been running in the 50C-65C range for quite some time then we might see a use. Can is keep the chipset below 55C?
This being the first run, I expect someone will produce on that runs 80-85% eff.
I guess this fan is for those who have maxed out their PSU wattage and desperately need a fan. haha.