If you are pushing through the restriction of a front mounted radiator, it's highly unlikely you'd come anywhere near a positive pressure configuration anyhow unless you only had one rear fan and sealed up every possible hole and seam. If dust is a concern I'd suggest a case with good front filtration or a modification allowing you to add filtration. Having more exhaust than intake, or larger exhaust than intake, or faster spinning fans moving more air than what the intake fans are configured for, will all offer negative pressure. Negative pressure is ALWAYS the most efficient, highest performance cooling configuration. Positive pressure's ONLY benefit is dust suppression.Ī positive pressure configuration is very hard on front intake fans, making them struggle to work harder against the increased resistance from the positive pressure it is trying to overcome, which in turn tends to reduce the lifespan of the fan motor and probably also bearing from the increased heat. Positive pressure does NOT provide the best cooling and temps. I'm using 4x 140mm fans and 1x 120mm fan (A total of 5x fans) and I'm planning on overclocking my CPU (8700k), so achieving the best temps would be necessary. However, I'm worried that a single exhaust fan won't be sufficient. This will leave me with a single 120mm fan at the back as exhaust. So, all things considered, I came to the conclusion that, the best fan config for my particular set up is to use 2x 140mm fans in the front as intake, as well as another 2x 140mm fans at the top as intake. However since this case has a closed front panel design, I'm worried that the 2x 140mm intake fans in the front won't suffice especially since they have to push air through the radiator which obviously adds to the restriction. I am mounting a 280mm radiator (Corsair H115i) at the front of the case with 2x 140mm fans mounted to it as intake.
CORSAIR AIRFLOW DIRECTION PC
So, I'm building a pc in the Corsair Carbide 275R case, and I'm trying to create a positive pressure to get the best cooling and temps.
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