If you’re seeing issues like that, it might be a good idea to run some hardware diagnostics or book the machine in for repair. You might get random restarts and freezes, or even see strange colors and glitchy graphics when trying to render 3D environments. This will cause problems with your computer around 3D and other GPU-related tasks. The only thing you really need to worry about is whether your GPU is getting too hot. Remember, it’s perfectly normal for your GPU to heat up under load, and for the fans to ramp up considerably to deal with it. There’s not a lot you can do about a hot GPU beyond avoiding activities that use your GPU. Not all Macs have a dedicated graphics processor, particularly lower-end notebooks like the MacBook Air and 13″ MacBook Pro. This includes activities like playing 3D games, rendering video, manipulating 3D objects in apps like Photoshop or Blender, and using some web technologies like WebGL. If you know for sure you aren’t using the tab or application for anything important, you can select it then use the “X” button to kill it. This is often the case with tabs on particularly resource-intensive websites. Sometimes, apps haven’t quite crashed but are still using more than their fair share of CPU power. You can wait a while to see if they’re coming back, or you could just click on the process, then use the “X” button at the top of the screen to kill the process. If any processes appear red or are followed by a “(Not responding)” label, then they have crashed. Click on the “% CPU” column to organize it by descending order, which will put the most taxing processes at the top of the list. Under the “CPU” tab is a list of currently running processes.
MAC MINI VERY SLOW MAC
Launch Activity Monitor on your Mac either by searching for it with Spotlight, or by launching it under Applications > Utilities. While you can’t necessarily break anything by doing this ( essential system services will just restart themselves), you might feel more comfortable simply restarting your Mac instead.
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Warning: We only recommend this if your Mac is slow, unresponsive, and is overheating. If your fans have been spinning for a while and your Mac is slow or unresponsive, you should check your running processes using Activity Monitor. This could be caused by a particularly resource-heavy process, or it could be a case of an app crashing. Sometimes, rogue processes end up consuming way too much CPU for an extended time period. Even remembering to quit a heavyweight app when you’re done with it can do wonders. Switching from a resource hog browser like Chrome back to Safari may help. Using lightweight alternatives to apps like Photoshop can certainly help, too. You can keep the heat down by avoiding processes that generate a high load, like rendering video or playing 3D games. As the heat builds up, the fans kick in to disperse the heat. The more you tax the CPU by running apps, copying files, and multitasking, the more heat is generated. 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.
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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
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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✯).
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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.