![]() IMacs, for instance, use fans to draw cool air up through the bottom of the aluminium chassis and across the components to expel the hot air through a thin, horizontal vent that runs almost the full length of the upper, rear panel. Tip: Apple has a knowledge base article for identifying and stopping rogue apps DesignĪpple designs it’s Macs to dissipate heat using different techniques such as the use of heat sinks and/or fans. Processors doing more work create more heat and can lead to a degradation in system performance. They may require more battery power, in the case of portable Macs, because the CPU/GPU is having to do more work. Rogue, or runaway, apps can put addition load on the processor and/or graphics card that can affect your Mac in a number of ways. Heat sinks - metal components designed to draw heat away.The display - the brighter it is the hotter it gets.the graphics processing unit, GPU, or “graphics card”.the central processing unit, CPU, or just plain “processor” (Intel processers consume lots of energy compared to ARM chips, say).the hard disc drive, HDD, as it is a mechanical device powered by a motor. ![]() Much of the heat that comes from your Mac is a result of components such as: The nature of computers, and the components of which they are made up, is such that some of that electrical energy gets dissipated as heat. Like any electrical appliance, your Mac gets warm – or hot – when it is in use. These are some of the causes of heat build-up in Macs. The more likely issues that you will face will be slow performance and automatic shut downs, of your Mac, as it protects itself from becoming catastrophically hot. It has been suggested that heat is a cause of optical disc drive and hard disc drive failures, though this would be over the medium to longer term and is not necessarily conclusive. A graphics card that is susceptible to heat, and failing, will sometimes manifest itself in scrambling the video output to the display.Įxcessive heat can cause the video card to produce a scrambled display. It seems to be that some components do not deal with excessive heat well at all, particularly the graphics cards. It’s normal for Macs to generate some heat during use, but prolonged heat – or regular warming up and cooling down with the machine being turned on and off – is unlikely to do it any good. It may be the design of the machine, where it is used or how it is used that contributes to heat-related problems. The reasons for their susceptibility, in the first instance, may differ. Whether you use an iMac, a MacBook Pro, a Mac mini or a Mac Pro, all of these machines are susceptible to heat. If this is something about which you are be concerned then this tutorial will explain a little more about the causes, the problems and the solutions to your hot Apple. Compare this with the longest decline in PC sales history and you can see what I mean.īut Mac’s are physically hot, too, sometimes. Apple’s Mac range of computers are, literally, the hot technology of the day with shipments of some 13.5 million portable MacBooks Pro and 4.65 million Mac minis and iMacs in the most recent quarter.
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