Originally Posted by doyll
Much better than a high speed 120mm fan.
I must have missed your Define R4 .. or you edited that in.
I've found raising case 30-40mm allows much better airflow to bottom vents .. and it quiets things down too. Some of us remove the bottom and back grills for same reasons.
I use a open bottom castor base to give the needed clearance .. also makes it much easier to move computer around when needed.
Link to removed grills in Define R2 and other links to Define R4 grill removal
Nice info thanks, yes I am going to raise the case up as with the carpet there is barely a gap and compared to the front fans the bottom fan does not have as much airflow, I am going to use 4 of these marble drink mats I have, but I can only find 2 of them so will need to find the other 2, the feet on the R4 are pretty useless 1 or 2 of them are held on with tape as they fell off, other than that great case though. I will see if I can get the front grille off without damaging it, but the airflow at the front seems good, I can feel a lot of air coming in from the noctua redux fans at the front, also i am not 100% sure if removing it will make that much difference, because if you look at the alignment of the side vents, where most of the air comes in for the front intakes, the front vent is in front of that, so I not sure if it will make much difference.Edited by Nicholars - 6/1/16 at 8:33am