It seems there is some confusion about exactly what sort of chips the new iMacs have in the sense that these appear to be unique to these iMacs and basically are not part of Intels standard lineup. There have been several reports that some if not all of these chips are overclocked versions of standard Penryn chips -- or am I misinterpreting the reports out there? Either way, should someone who is considering buying one of these have any worry that somehow these chips could be more prone to burnout, dying an early death? Heat production? Anything else to be concerned of? It seems there is no way that we will know in the next few weeks how well these chips last long term, etc., but if anyone has any more information on this and if anyone can comment on heat from these or any related info, I'd appreciate it. I am a little hesitant to buy one given these concerns. Any other examples of similar scenarios (overclocked custom chips landing in a mainstream model like this, Apple or otherwise)? Thanks.