How to Keep My MacBook Cooler
Many people love to use their notebook computers on their laps. Unfortunately, modern notebooks use extremely high-performance components that can generate a great deal of heat, and you may occasionally find that it is uncomfortable to use your MacBook without a desk to place it on. If you dislike the heat level of your MacBook, however, there are several steps that you can take to lower it by decreasing the heat production of the computer or increasing the efficiency of the cooling system.
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Instructions
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Use your MacBook on a cooling stand with at least one active fan. The fan in a cooling stand blows cool air over the bottom of the MacBook, helping to dissipate heat more quickly than the MacBook's internal fan can do on its own.
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Spend less time running demanding applications on your MacBook. If you spend long hours playing 3-D games on the computer, you can expect it to heat up because of the load on the Central Processing Unit (CPU) and Graphics Processing Unit (GPU).
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Lower the brightness of the screen. The MacBook sends energy to the screen to power the backlight, and this generates heat. Reducing the brightness slightly decreases the overall energy load of the computer and lowers its heat production.
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Install fan-control software to raise the speed of the system fan. The default fan speed settings of the MacBook are optimized to balance between heat reduction and low noise. Raising the speed of the fan manually will increase the computer's noise level, but will keep it dramatically cooler.
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Install CPU speed-control software. The processor is the primary source of heat in a notebook computer, and if you rarely run demanding applications on your MacBook, you may not notice much of a decrease in performance if you force the CPU to operate at a lower speed than normal.
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References
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