damn 20 fans thats crazy. i wonder what your electricity capacity is, over 200 amps ? I just have a turbo fan type exhaust out the window, moves air really good. if its at max, outside you can feel it 15 feet away. gpu temps arent really lower much, but house temp is wayyyyyy lower.
i believe its where I have my rigs and how I built them. I have them set up for looks with leds showing and everything is color coordinated on racks that looks real neat, but not optimal for air flow. My first 16 rigs are real eye candy, but am learning the price I have to pay for a "cool" set up. My new rigs I am building are designed for heat management and it takes one fan to keep them under control. I run my 200 amp service at 220 amps with air fans keeping the breakers cool. I am building a barn with 400 amp service to move them too so I can take the heat and the fire risk out of the basement.
