Hi everyone I have a 15" retina MBP 2.6gHz 16gb RAM. It can run pretty hot. Seems to be the norm... but also seems to vary greatly from machine to machine. Been trying some temperature gauge software to get a benchmark of how hot things are getting. I usually use a zbrush dynamesh with aggressive claybuildup action and the computer gets hot and the fans spin up. There's a point it reaches which is pretty much the maximum I see in any usage (but gets there a tad easily). Now, my problem comes with actually knowing if the machine is genuinely running too hot for comfort. SMCfancontrol reports a temp of around 103C which is pretty scary. Worryingly so if the max temp for the CPU is 105C. However, iStat Pro doesn't show any results getting near to this. Highest results are in the 80-90C range which is hot but doesn't feel as worrying... Also tried Macs Fan Control and that also reports in the 80-90 range. Just gave Temperature Monitor a go and that was reading the CPU cores at around 100-102C So... lots of info and not sure what to be looking at... Long story short (too late)... to get an idea of whether my MBP is running at a safe level, what should I be using to check the temps and what level is safe... Sorry, there seems to be a bewildering amount of info on this subject out there and I'm having trouble nailing it down in a sea of seeming contradictions... Thanks.