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emajko159 27/01/2015
This was my very first high power LED few years ago. Now I am using more efficiency LEDs because 90lm/w is not enough and it produce a lot of heat, therefore you need strong power source and big cooler. But this price is unbeatable and for this price I had to buy it for maybe some future diy projects :)
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  • purple 90lm/w ? Not even close. This is the advertised output. Real output is close to 500 lumens (50 lumen/w)

    Reply 28/01/2015
  • Attaiaa which kind of led use today?i don't find more than 90lm/w.bye

    Reply 30/01/2015
  • purple Branded LEDs like Cree. Using those you will be able to have 90 lumens per watt. These LEDs here have an output of ~50 lumen per watt.

    Reply 05/02/2015
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