Originally Posted by morgsmith
Does overclocking alone cause heat for the cpu? I am planning to overclock but I'm hesitating because I only have 2 regular fans for cooling for my PC.
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It not enough to cool your CPU. Other components on the motherboard such as chipsets, RAM, and graphic cards can also contribute a lot of heat. Other external components that contribute heat are the power supply, hard drives and CD/DVD drives. Before you even think about overclocking you need to make sure you have adequate case cooling. You also need to make sure your CPU has adequate cooling. A have seen stock CPU coolers prove inadequate even at normal settings.
Overclocking can not only can cause your CPU to run hotter but the changes you make will often cause your chipsets and RAM to run hotter. Even if the cooling had been adequate for normal settings you will have to improve both case and CPU cooling if you are to avoid overheating your components. A lot has to do with the quality of your motherboard. Some motherboards can operate while overclocking much better than others. For example overclocking requires good voltage stability to keep the system from crashing. Better motherboards are designed to provide better cooling for the chipsets to keep them from overheating and failing when overclocking. Even a good power supply is importent. A cheap power supply may seem ok for normal use but become unstable when the system is overclocked.
One still has to understand the limitations of the components in the system. Sure better motherboards protect the components better and better CPU coolers protect the CPU better but only to a certain point. If you go beyond that even they will fail and you risk doing damage to your system.
I learned the hard way when I failed to keep my system cool enough. I thought my old case had adequate cooling when I rebuilt my system. After all it came with six 80mm fans. Unfortunately even with my system running stock the CPU eventually failed because of overheating.
I bought a new case with much better cooling. It has four 120mm fans and one 140mm fan. That greatly improved the air flow but still the CPU ran hotter than I liked. I had a choice between a large air cooler or low end water cooler for CPU cooling. I chose a water cooler for the CPU because of concern over whether a large air cooler would fit in my system. Now that my system had adequate cooling I tried some overclocking. It worked well for almost a year that way. A few months ago I upgraded to a new AMD FX processor. I have not tried any overclocking yet with it.
For sever months after I upgraded my system with better cooling I really stressed my system by folding. When a system is folding all CPU cores and the graphic card GPU run at 100% twenty four hours a day. I monitored my temperatures and fan speeds during that time. I found that even though my CPU was kept cool enough my biggest concern was the graphics card. I think its GPU temperature was kept low enough but the fans on the graphics card ran faster than I liked. In contrast the CPU fan was barely noticeable.