So I have an i5 2400 CPU. I've built the whole rig accept for the GPU. I wanted to try out the integrated graphics, just to see what it would do. So, I started portal 2 in full screen. 5 hours later I quit portal 2 and coretemp starts rapidly cooling down from 72 degrees Celsius. I've used it for 5 days since then and it seems just fine. It runs in the 31 degree range idle. That said, I haven't tried anything heavy. Just League of Legends which runs in the high 40 degree range. Have I ruined my CPU in any way? Is there any way to tell? I'm using the stock fan. Do I need to buy a better one? Even on high load I'm not sure it's ever supposed to get that high.