This post shows hat you do not understand why role efficiency plays in converting electricity to heat/usable light. Whats the rated current for the leds on the cloak compared to the driving current? It needs to be around 50% of max power to be in the efficient category. The light I also stated would put out 984PPFD in a 80SQ/F room for 3000W. Hard to beat those numbers. And all while putting out less of heat as ONE 1000W DE HPS....
CXB3590CD36V3500K 80 COBS @1.05A ON 5.88 PROFILE HEATSINK
80 SQ.FT. CANOPY 94% EFFICIENT DRIVER @15 CENTS PER KWH
Total power watts at the wall: 3024.47
Cobs power watts: 2843
Total voltage forward: 2708
Total lumens: 554385
Total PAR watts assuming 10% loss: 1574
Total PPF: 7319.1
PPFD based on canopy area: 984.78
PAR watts per sq.ft.: 19.68
Cob efficiency: 61.5%
Power watts per sq.ft.: 35.54
Voltage forward per cob: 33.85
Lumens per watt: 195.0
Heatsink riser thickness / number of fins / fin's length: 0.27in/14/1.0in
Heatsink area per inch: 260.01 cm^2
Total heat watts: 1095
umol/s/W / CRI: 4.65 / Estimated
Heatsink length passive cooling @120cm^2/heatwatt: 505 inches
Heatsink length active cooling @40cm^2/heatwatt: 168 inches
COB cost dollar per PAR watt: $2.42
Electric cost
@12/12 in 30 days: $163.82
Electric cost @18/6 in 30 days: $245.48
Cost per cob: $47.62
Heatsink cost per inch cut: $1.74
Total cobs cost: $3810
Total heatsink passive cooling cost: $879
Total heatsink active cooling cost: $292