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Power consumption: How much are your gadgets costing you?

With Earth Hour making us aware of the need to conserve electricity, we conduct a real-world test to see just how much our TVs, computers and other home electronics equipment costs to run.

Logitech QuickCam Sphere AF

While the QuickCam Sphere produces excellent pictures and has impressed us with its automatic face tracking, these features don't justify the extra expense over the cheaper webcams in the Logitech stable with matching optics.