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Re:That 60W-equivalent LED: What no one will tell you by ars on Friday November 22, 2013 @11:01AM (#6781510)
To give you an actual answer to your question:

LEDs and CFLs are about equally efficient, but CFLs produce their heat on the bulb, and LEDs produce their heat in the base.

So CFLs (and incandescents) send their heat out into the room, which cools the bulb. LEDs keep all the heat inside which is a huge problem for them.

Personally I think bulb replacement LEDs are a dead end, and instead you should look for dedicated LEDs fixtures.

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