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Fan-less cooling solution for laptops up to 40W launched
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
They're "bladeless" fans are just regular fans with more steps. Those added steps introduce inefficiencies. Simple as that. If you wanted to make a fan more efficient, you could add a shroud close to the blades, but the energy cost of electric fans are already low enough that it really doesn't matter.
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