Hydra 64 = 4 x Prime 16?

[Bohemian Waxwing]

I found an open box deal on a Hydra 64, and have been thinking about picking it up.

However, I am bit confused by the wattage. I've read that the Hydra 64 is basically 4 Prime 16s (the naming suggests the same, 64/4=16). However, the Prime units have a power draw of 59w, while the Hydra is only 135w.

So obviously the fan is added to the power draw. Is there a resource which shows how much wattage of light these units actually use. Would be nice to know, and maybe compare against something like an XR15.

 

[Bohemian Waxwing]

I think I may have just found a useful answer posted by @SPitts6554 here: Chart showing wattage and PAR

May as well leave this up in case anyone searches for it.