StyleandAplomb

I've watched that video, and while I appreciate that in the end it's not an earth-shattering difference either way, I am unfortunately a chronic worrywart and overthinker. And since it doesn't make much of a real world difference past a certain point, if having the setup I described above makes me feel better then it should be fine, right? The fans I am installing in the front are also very high static pressure (4.18mmH2O), so the mesh filters should not cause any problems to my knowledge Protecting my computer from junk exactly why positive pressure is very important to me. I live in an environment with a lot of dust, and more concerning, a lot of pet hair. With two dogs and a cat, without maintaining good positive pressure the inside of my PC would get gunked up in no time flat.

Yeah I know those Noctua fans are not exactly silent running, which is why it was so important that they be pwm. I think I might have to buy a pwm Y splitter though since my motherboard technically has 6 4-pin fan headers but one of them is in a stupid place. I hope I'm not running this PC under heavy load all the time, though.

Well I don't think pressure is going to be a huge issue given the CFM disparity between intake and exhaust. My worry is that, given the sheer volume of the air I'm going to be moving with these fans, I'll end up recirculating warm air around the case or causing big pockets of turbulence. For whatever it's worth I am also leaning heavily on the idea that I can modify the psu shroud in the case and remove as many HDD cages as possible, up to and including modifying the cage stacks, so allow totally unimpeded airflow through the front of the case.

I am building a new PC, and part of my planning involves thinking a lot about maximizing airflow through the system. The case I am building in is a Phanteks Enthoo Pro with an Intel 8700k cpu, Noctua NH-D15 cpu cooler, and a Gigabyte GTX 1080 gpu. The Phanteks case comes stock with one Phanteks PH-F200SP_BK fan rated at 110.1 CFM installed as a front intake, and one Phanteks PH-F140SP_BK fan rated at 82.1 CFM installed in the rear as exhaust. While I am somewhat confident that this setup is plenty fine on it's own, I would much rather have a system which replaces the total case air volume (as far as I can tell the Enthoo Pro has an internal case volume of 2.44 cubic feet) and maintains a higher internal pressure than those two fans alone can provide. To that end, my current plan has me installing two 140mm Noctua NF-A14 IndustrialPPC-2000 fans, each rated at 107.4 CFM, as intake, one more Noctua NF-A14 IndustrialPPC-2000 as rear exhaust, and moving the stock Phanteks PH-F140SP_BK to a top exhaust behind the cpu cooler. By my math, that's 218.8 CFM (3.65 cubic feet per second) intake and 189.5 CFM (3.16 cubic feet per second) in exhaust, keeping positive pressure. All these fans also have 4-pin connectors, so setting a custom fan curve will be one of the first things I do. But looking at the numbers I'm a little concerned that it's maybe too much air moving through the PC at any one given time, I'm not married to this setup and would like to hear some of your thoughts.