Can Cyclone III Be Damaged By Heat?

Thank you for the response thepancake! I indeed had not looked at that. I tried it out for a bit, but had trouble figuring out how to use it. I saw that it referenced PowerPlay in Quartus, something which I hadn't used before. So I tried using that. A couple of questions:

Will PowerPlay give me an appropriate estimate of the chip's temperature? I saw that it listed an estimate of junction temperature, so that, I assume, is the value I should be looking at.

PowerPlay was setup, it seems by default, to expect a heatsink on the chip. I changed that setting to no heatsink and no fan, since there are none on the C120 Dev Kit. Was that the correct thing to do?

PowerPlay's estimate of power usage was way off, compared to what the on-board power meter tells me. PowerPlay reported that the toggle rate was probably wrong, and a simulation should be run. How do I resolve that issue?

Would it be a better idea to use this equation (from WikiPedia):

 TJ = TA + ( R θJA × PD )

and use the power reading from the on-board power meter for Pd? Would that give a better estimation of the real-world temperature, vs. PowerPlay's estimations?

Sorry if these questions seem simple. I will be browsing Altera's documentation to try and answer them myself, but I figured it was worth asking in case I can't find the answer.

Thank you for your help!