Alright, I'm new at this so please forgive my ignorance. I'm looking to get a 24" iMac. Say I bump up the specs to 2.8, with 4GB of RAM, and a 1TB drive. In doing so am i risking any heat issues? I'm guessing not because I don't think apple would offer such a configuration if there were these issues. But I thought I would at least get your input. Does a larger hard dirve have heat issues? The last thing I want is an expensive fried iMac. Thanks in advance for your help!