Cooling and noise calculators for PC builds.
Case airflow and pressure. Fans and GPUs on a case diagram, intake against exhaust with filter and radiator losses applied, plus the case air temperature rise from GPU waste heat.
Open →Two fan setups compared at the same airflow. Levels add logarithmically, noise scales with rpm⁵.
Open →Equilibrium coolant temperature from radiator size, core thickness, fan speed and heat load.
Open →Every fan with computed curves: airflow behind a dust filter and on a radiator at every rpm, noise over rpm, static pressure against airflow, with uncertainty bands. Search, filter, one page per fan.
Open →Overlay up to six fans on one axis: same rpm, same delivered airflow, same static pressure or same noise, and read the rest off the chart.
Open →AIO coolers with what radiator and stock fans compute to: dissipation, coolant temperature over fan rpm at your heat load, the rpm a target needs, noise. Stock fans link to the fan database.
Open →Overlay AIOs at the same fan rpm, the same noise or the same coolant temperature, at your heat load.
Open →Cases with mounts, radiator support and clearances, and the computed balance with the stock fans behind the real front: pressure verdict, case heating, mount capacity.
Open →Cases side by side: specs, stock airflow, pressure verdict and case heating at the GPU load you set.
Open →Free calculators for PC cooling that run in the browser. No install, no account. CaseFlow computes the airflow and pressure balance of a PC case from the fans, dust filters, radiators and GPUs you place on it. FanNoise tells which of two fan setups is quieter at the same airflow. RadiatorTemp gives the coolant temperature of an AIO or custom loop and the fan speed a target temperature needs.
Questions it answers: how many intake and exhaust fans a case needs for positive pressure; how much airflow a dust filter or a radiator costs; whether two slow fans are quieter than one fast fan; what coolant temperature a 240 or 360 mm radiator settles at; how warm the case air gets with a 300 W GPU.
Every figure is computed from catalog data with a documented model and shown with an uncertainty band; nothing here is measured. The method is on each tool page.