I’ve been roughing up a build, need help with some advice about how exactly to plan it. I plan on making my own frame, and may go with active heat sinks I found on Newegg for cheap. Is it necessary to have a heat sink for each cob, both passive and active? Is 6 Vero 29 cobs close to a 600w hps all all. Obviously it matters how much energy your giving each cob. Also should I run a bigger driver like this or two smaller ones?