Anyone to help me decide how much exhaust airflow I will need to keep my 4.5 m3 rig room cool? I have a few cards installed there, with a power draw of about 1500W. The cards are running really hot with fans spinning at 90%.
My idea is to put each rig in a closed rack.
have 2 intakes and have 2 fans blowing directly to the cards.
put 2 exhaust on top of the card to pull out the hot air out of the rack
try to find 5 inches PVC pipes and guide the hot air out of the room
remember the pipes will get hot ( my record is 70 c )
I'm keeping my rigs cool with this method with cards temp around 48-49 at nights to 55-56 in the mornings
but the noise can and will kill you !
P.S: I prefer the fans to be 5 inches and 110v to lower the load on PSU also try to find high RPM fans with maximum air flow