Quote Originally Posted by khyberkitsune
About 70% of the power that goes into an HID system is lost as heat, with the rest being produced as light. With LED, about 10% of the input power is lost as heat, with the rest producing light.
You say potato, I say patato...

So my previous statement was pretty much on target except that I referred to efficiencies...
Quote Originally Posted by bigsby
LEDs do produce heat, just not nearly as much due to efficiencies. Hence, a 300w LED can be cooled with a heat sink or a small computer fan while a 300w HID needs a squirrel cage. HID produces a ton light across a wider spectra including yellow and orange light which equals heat. An HID also literally burns inside the bulb. So 300w of HID = tons more heat than 300w of LED. That much I'm pretty sure of. We need khyberkitsune in here to straighten this out...
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