Choosing & Installing PC Cooling Fans As Fast As Possible
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Description
It can be tricky to find and install the correct computer fans. This episode shows you how pick out and install fans in only a few minutes. FORUM LINK: linustechtips.com
This Tech Quickie episode shows how to identify which PC cooling fans will fit a case or cooler and how to install them quickly and correctly. The host begins by advising viewers to check manufacturer documentation or measure mounting points on the case to determine fan size, listing standard sizes such as 80, 92, 120, and 140 millimeters. He explains how to measure center-to-center hole spacing and notes that airflow should generally move from the front bottom of the case toward the top back to ensure components remain cooled. If a fan lacks clear labeling, the video provides a simple method: look for plastic hub supports and deduce the airflow by the side with the hub motor away from the airflow direction. Installation is described as straightforward, typically using four screws, but the host also discusses vibration reduction using rubber isolators to minimize case resonance. The video then covers power options: a four-pin Molex connector that provides basic power with no speed control, a three-pin fan connector that can be fed from a power supply or motherboard and enables RPM sensing, and a four-pin PWM connector that allows precise speed control via compatible motherboards. The host concludes by encouraging viewers to subscribe, like, share, and participate in the forum for future quickie topics, emphasizing a fast, concise guide focused on practical fitment and basic wiring. The episode emphasizes practical, immediate steps for choosing fan size, determining airflow direction, mounting with or without vibration dampeners, and selecting the appropriate connector type to suit user needs and motherboard capabilities.
Topics · hardware · education · how-to · tech-tutorial
Questions answered
- What is the standard range for common fan sizes and how do you verify them when you don't have a fan on hand?
- Common fan sizes are 80 mm, 92 mm, 120 mm, and 140 mm. If you don't have a fan handy, measure the mounting hole centers on the case to determine the size, or compare against an existing fan of the same type by measuring center-to-center hole spacing.
- How can you tell the direction of airflow on a fan if it is not labeled?
- If labeling is unclear, identify the hub area with the motor; air typically flows away from the hub. The side with the plastic hub and motor is usually the side where the air exits, so position the sticker side toward the exterior for exhaust.
- What are the different connector options for fans and what do they enable?
- Four-pin Molex provides power without speed control, three-pin connectors allow power supply or motherboard connection with RPM sensing, and four-pin PWM adds dedicated speed control via compatible motherboards.