On a Mac computer with Apple silicon: Close and open the lid on your laptop, or restart your computer. On an Intel-based Mac: Reset the System Management Controller (SMC) If the fans in your device run fast even when it isn't experiencing heavy usage and is properly ventilated, follow the steps for your device: If you use your device on a soft surface like a couch, pillow, bed, or your lap, its fans might run more. Use your device on a hard, flat surface like a table or desk for optimal temperature control. Make sure that the vents aren't blocked to allow your device to perform at its best. Some Apple products have vents that let fans bring in cool air and expel hot air. Make sure the vents on your Apple product aren't blocked Learn more about the operating temperature of Apple laptop computers. If the ambient temperature is high, the fans turn on sooner and run faster. This rushing-air sound is a normal part of the cooling process.Īmbient temperature, the temperature outside the device, also plays a role in the fans' responsiveness. You might hear fan noise when this happens, especially if you're in a quiet environment. If your device's processor is working on intensive tasks-such as compressing HD video, playing a graphics-heavy game, or indexing the hard drive with Spotlight after you migrate data-the fans run faster to provide additional airflow. Some Apple products contain sensors that respond when they detect temperature changes inside your system or device, turning on fans to bring cooling airflow to critical components. Learn how your Apple product monitors internal temperatures and uses fans to cool critical components. About fans and fan noise in your Apple product
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