The truth is both AMD and Intel have technologies in place that will either lower the clock and core voltage or shutdown the system if the processor reaches a critical temperature.
In regards if that is a factor in whether or not one processor is better than another is completely untrue. In reality each processor will perform well in its perfect enviroment. You see many AMD Vs. Intel reviews on the internet and most of them are not worth their salt.
A plethora of designs and combinations of Processor, Motherboard, Memory, Video cards, etc will create a plethora of results each pointing to one being better than another in varying areas.
Not one processor takes the cake in every test performed on it. For instance: Office Applications and general office usage of a system will most likely result in Intel being the #1 choice; Gaming, compiling, ad data processing intensive programs will probably show AMD as the superior rank.
What this all boils down to is personal preference. Most of the people I have had the pleasure of encountering on the Hardware forum regularly tend to lean towards AMD-based systems. However, there are many regulars who like Intel. If you ask 1,000 people which processor was the best one they have ever used, you would get 1,000 different answers.
The key is to (if possible) broaden your horizons and use a well-built Intel system and then a well-built AMD system and make a decision on your own.
As for thermal concerns, newer technologies in the newer cores of the Athlon 64bit platform starting with the Venice core will perform at a lower temperature comparable to its Intel counterpart. That said, if you have adequate cooling and a properly built system with quality parts that work in unison, you will have a fast, stable computing platform to do almost anything.
"Now, I don't want to get off on a rant here, but..." - Dennis Miller
