In most extreme situations when cooling becomes totally inadequate (such as in the event of cooling fan failure), your Mac can even perform emergency shutdown in order to save components from permanent failure. Since those components are rated to function with optimal speed only in a certain temperature range, overheating can cause them to reduce their working speed, and in some extreme cases even significantly throttle their speeds. This unobtrusive app is especially useful for users who are putting a lot of processing strain on their Macs, and especially for laptop users where the working temperature of the core components such as CPU and GPU can directly impact the performance levels of the entire configuration. I use this program frequently on my MBA computer and it really comes in handy, not only for temperature control but for many other reasons as well.SmcFanControl for Mac is a lightweight system utility that can help users of all knowledge levels to get full control over the function of built-in fans and oversight over the cooling status of their Mac computer. The LED light gives you the ability to see if the fans are on or not. For example, it might be nice to know that the computer is cooling down quickly at the beginning of the day but you don't need the computer to be over-speedy heating up later in the day. The timer control allows you to set a time to remember each fan speed and then turn them on at the right time. It also has a feature called 'low battery alarm' which will automatically turn the fans off when the battery is low and turn on again when the battery is full.Īnother cool feature of SMCfanControl is that it comes with both a light control and a timer control.

To adjust fan speeds, you have to have administrator privileges. It does this by adjusting the minimum speed of the fan and by setting the maximum power used. The only thing you'll need to be careful about is keeping the computer on an incline so that there is proper air flow.Ī SMCfanControl allows you to control the fans in your Mac manually just to make it operate much cooler. You can even set up a timer to turn the fans off and on at set intervals. My advice for people who run their programs all the time in a crowded room is to get a SMCfanControl utility that will not only turn their fans off when not needed, but will also automatically shut them off when the room temperature reaches a certain point. I've always had a problem with computers overheating, especially when running multiple programs at once, and I'm sure you've experienced the same problem I have.

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