My new 3rd gen 16 gb AT&T seems to be running just as cool as my 1st gen model. Screen brightness is about 35%. Use mostly on home WiFi. With 8 apps open, CPU usage is reported to be about 12% using System Activity Monitor. It's in an Incase Book Jacket Select case and I took it out just to check the case temp. So please post some specs on those that are running warm.