Greetings, I am new to using iMac's in general, and need to know a few things about their physiology. I am looking to purchasing one from a friend. It's the 2011 release, core i5 2.7 ghz. with 24GB's of ram. If I purchase this, I would be using it for production purposes, and putting it through strenuous tasks for days/weeks on end nonstop. I would be using various 3D software packages such as Blender, Maya, Softimage and even game engine rendering using Unity 3D, but mostly 3D Animation rendering. For those of you who have used these programs, you know it's not photoshop, these are high end programs that are really going to pound away at the CPU's and eat a lot of resources for Ram. Do I need to be concerned about it overheating frequently and frying the motherboard or ram? Can this machine handle intense CPU & RAM usage for extended periods of time? I thank you in advance.