A cooling device protects the CPU from overheating by dissapating the heat and/or blowing air onto it.
When the CPU overheats, it can make the computer operate unstably and possible crash it.
Overheating can also decrease the processor's life span, making a good cooling unit a worthy investment.
There are several types of cooling devices, but this procedure covers only those designed for Socket 7 processors.
Most older cooling units were in the form of heatsinks, which are pieces of machined metal with large surface areas from which to dissapate heat.
Most modern cooling devices are combinations of heatsinks and fans.
They perform much better and are usually priced between $10 and $30.
If your CPU runs especially hot, you might want to consider a peltier cooling unit, which uses refrigeration technology to keep the processor safe.
These usually cost between $40 and $60.
A Phillips screwdriver and about 25 minutes of time are required to install a CPU cooling device.
Click here for a list of links to cooling device manufacturers.