Randomblame
Well-Known Member
Nope, not such a big difference.
I'm not sure you reach 1gpw with hard driven generic COB's but 0,8gpw sure.
With 20 of this next generation 70w COB's mentioned by the OP above(44$) and running them soft at 600-700mA per COB you could build a 450w light, which should be able to reach the 1gpw or more zone. Maybe a 600w hps replacement..
I'm not sure you reach 1gpw with hard driven generic COB's but 0,8gpw sure.
With 20 of this next generation 70w COB's mentioned by the OP above(44$) and running them soft at 600-700mA per COB you could build a 450w light, which should be able to reach the 1gpw or more zone. Maybe a 600w hps replacement..