"The Nyko Intercooler has been reported to have caused a general hardware failure in a number of consoles, as well as scorching of the power AC input. Microsoft stated that the peripheral drains too much power from the console and can cause the faults to occur, and stated that consoles fitted with the peripheral will have their warranty null and void." Therefore if you experience the "Ring of Death" and try to get your console repared, Microsoft could very well refuse to repair your console if there is any evidence that the NYKO Intercooler has been used.
This is simply an eye opener, it certainly made me re-think. I think the main key is simply, keeping your console well ventilated.