Several are available. If you overclock your computer, it will be hotter than usual. If you didn't do it, you don't need to underclock since that will make your computer lag. Note, this is for Windows only. You might be able to do this on Mac but Windows is easier. Click the battery, choose more power option. Change plan settings for the one you use, then click Advanced power settings. Click processor power management, then maximum, processor states. Set both to around 70-90%. (80% is recommended). This works well!

How would you rephrase that briefly using Chinese?
获取一个可以追踪电脑温度的程序。 避免电脑超频运转。 降低最大处理器的状态。 减小亮度。