All chips used today require a special cooling system. How much cooling depends on the processor, the case, and the type of cooling system you are using. The type of processor is the biggest variable in the amount and type of cooling needed. For example, the Cyrix 6x86 is a nice Pentium alternative, but runs much hotter than the Pentium. Cooling Problems A processor that is not cooled enough will show some strange errors.
Every processor has a safe range of temperatures that it can handle.
Once the temperature gets above that point, one will usually see random error messages. Many times, one will not suspect that cooling is the problem because the error will seem to be coming from another part. Common errors are system crashes, lockups, and surprise reboots. It can also have program errors and memory errors along with many other things. Most cooling hardware is designed for the AT case.