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#11
Remember, CPUs in the same "family" are sometimes produced in huge batches, and then tested for stability at different speeds to see where the part is stable, and then binned for sale at that speed. Overclocking a CPU that was potentially only stable at 3.2GHz means that 3.7GHz would be death to it. You have no way of knowing if you have a CPU that was running at 3.2GHz because it wouldn't pass faster speeds or was simply designed to run at 3.2GHz, but in general overclocking is something you must consider anytime that system becomes unstable afterwards. Also note that overclocking can cause permanent damage to the part, so you do take a real risk when you overclock something and create more heat.