TechARP's BIOS Option Of The Week is CPU Thermal-Throttling, you can learn about it over here.
This BIOS feature determines the clock speed of the processor when it is in the Suspend To RAM (STR) power saving mode. It has no effect when the processor is in normal active mode.
Available options for this BIOS feature are set values of the processor's power consumption. They range from a low of 12.5% to a high of 87.5%. Please note that these options reflect the desired power consumption of the processor, not its clock speed. The clock speed of the processor will be determined based on the option chosen.
The default setting is usually 62.5%. This means the processor will be running at a clock speed that allows it to use 37.5% less power.