The Central Processing uUnit (CPU) is the brain of your computer. You’ll need a spare USB port to use a cooler like this. The metal acts as a heatsink, helping to disperse heat through conduction while the fans provide active cooling. These take the form of metal stands with integrated fans. Laptop coolers (like this one from Thermaltake) can help cool down a MacBook that’s struggling in the heat. If you’re outside on a hot sunny day and you’re feeling warm, there’s a good chance your MacBook is, too.

If the ambient temperature is hot enough, your Mac will reflect this by running the fans for longer and at higher speeds. You don’t necessarily need to be doing anything for your Mac to heat up. Make Sure Your Mac Can Cool Itself Properly There are some things you can do to help reduce this happening. macOS will temporarily underclock your processor to reduce heat, a process known as thermal throttling. Ultimately, you shouldn’t need to worry about cooling your Mac manually (though there are things you can do to help). Generally speaking, around 90ºc (194✯) isn’t unusual for a Mac under heavy load, but you want to keep things below 95ºc (203✯). You can also use a small app like smcFanControl to place a widget in your menu bar that displays how hot your Mac is running inside the case. Loud rattling noises are also a red flag and usually occur when bearings in the cooling mechanism work their way loose. What isn’t normal is a hot silent Mac, which could suggest that fans have failed. Remember that heat is a normal part of your Mac’s operation, and loud whirring fans means the machine is operating as normal in an attempt to cool itself down. The computer should never be too hot to touch, though certain processes may make it uncomfortably warm, particularly if it’s a laptop that you are using on your lap.

Imac keeps freezing late 2016