Every modern CPU supports the HLT instruction (opcode F4) that instruct the CPU to enter a stand-by state. Windows operating systems based on NT (like NT 4.0, 2000, XP) calls this instruction during the idle time.

Sometimes it could be really useful to execute this instruction when the CPU is very busy, for example when you are playing a game.

For example I have a notebook, and when the room's temperature is over 25°C I cannot play a game because the interal case temperature quickly goes over 75°C and the computer power off itself.

I cannot modify the hardware cooling systems of my notebook so I decided to write this program.

CPU Eat 'n' Cool 'eat' some CPU power to execute the HLT instruction. Your games or your applications will be a little slower while CPU Eat 'n' Cool is active but your CPU will be surely cooler.