Yeah I agree. From what reviews I can find, heat is always mentioned. Most all recommend a fan driven heat sink.
Thanks for your input
@BigSm0 you know that you get what you pay for and I am sure this is no different. I really don't need a super light, I've been growing with 3x100 Mars, three of them in my 2x4x5 ft tall tent. I have to LST the shit of my girls to keep them from outgrowing the tent height. What I want is deeper canopy penetration. Been hearing alot about DIY COBs and want to try building a light that would at least equal the 3X100. The drivers in my old mars are 55-100 volt and there are 4 drivers. Can someone recommend a chip that would do what I want done? Thanks for helping out.