SMPS drivers for LED are mostly around 80% efficient.. many are far below this... what you draw from your 240V source is what your power supply requires.. not what your light source requires.
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Yeah sweet. Definitely runs cooler with LED rather than plasma which is a big + for longevity of the product. I suppose $ saved is minimal in energy consumption over the course of a year due to it's size. Still a good selling point though. Wouldn't you agree?