do a google search for SMCfan for mac. Its great, you can set the fan speed to whatever you want. I prefer it max speed 100% of the time. since my macbook1 has only 1 fan vs the newer macbooks with dual fans. I need to keep my Macbook at 100degrees or less. Without SMCfancontrol im at 150+ degrees and is uncomfortable to keep on the lap. Great FREE application btw.😀