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Vacuum revolutionary James Dyson has unveiled new shapes and sizes for his crazy, bladeless "air multiplier" cooling system. The old unit was designed to sit on your desk. These? The stand over a meter tall and look striking, but they've got one unfortunate thing in common with their predecessor.
 
Computers are getting quieter and quieter, what with silent SSD drives replacing traditional hard drives. Cooling fans, meant to keep the CPU cool, are becoming the only moving parts left in computers, and even their days are numbered. That's because...