![]() SmcFanControl is quite lightweight and runs on all machines with a Mac operating system of 10.7 and above. You can use the settings to individually maintain the minimum speed of the left and the right fans. One setting is for when your computer is charging, another is for battery usage, and the last for when it is connected to an AC power source. The software comes with three presets that are easy to customize. You can download smcFanControl for Mac and use it to manage the temperature of your PC. This functionality allows you to gain full control of your device’s fans without worrying about system failure. smcFanControl takes care of this problem by setting a limit below which users can’t go. It’s reluctant, mostly because this could lead to CPU failure if someone reduces the speed limit below the required minimum. However, Apple doesn’t provide any software that lets you take manual control. To bring down the overall temperature, the device lowers the clock frequency and spins the fans so the processor gets a chance to cool down. It can even happen when your device is trying to complete old processes or running apps in the background. If you tend to run heavy applications or system-intensive games on your computer, you may have noticed the heat that your MacBook gives out. See link for details.Why do you need to control the fans of your Macbook? Use the YouTube HTML5 Video Player to watch YouTube videos, when available.Install ClickToFlash (Safari), Flashblock (Firefox) or FlashBlock (Chrome) to control which Flash content plays on websites.Find your Flash version and make sure it's the latest version available. ![]() Make sure the vents remain unblocked to allow your computer to perform at its best. The iMac vent is a slot on the back near the top of the computer. ![]() The intake and exhaust vents are in the back of the computer near the hinge on all Mac notebooks. (PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.) If they're spinning up without increased heat, try resetting the SMC. They will spin faster as needed to keep temps at a safe level. iMacs have 3 fans with minimum speeds in the 800-1200 range. Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). This doesn't indicate that it's overheating and will not harm the computer to be hot to the touch. The aluminum body transfers heat more effectively than other materials used in computer casings, so you will feel the heat more. It is also quite normal for your Mac to become extremely hot to the touch during intensive operations. It's just your Mac doing its job to maintain temps within the normal range. If you're constantly putting high demands on your system, such as gaming or other multimedia tasks, expect temps to rise and fans to spin up accordingly. Websites with Flash content, games and other multimedia apps will put higher demand on the CPU/GPU, generating more heat. Unless there is a rare defect in a Mac, most temps are well within the normal operating range, considering the workload being put on it. iStat Pro will give you accurate readings of your temps and fan speeds, among other things. The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat (around 100C/212F - 105C/221F, depending on your processor). Click to expand.Any fan control software that limits the maximum fan speed is not recommended, as it can cause overheating.
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