Don't mean to question your credibility Avenger as everyone knows that your posts are always fact based ~L)L~ but I would like independent confirmation of the device identity. For both of them.

If they are LM75 devices, then they are measuring the board temperature at their location and are not using a temperature diode on the ASIC. If they are some other chip, then they may be using a temperature diode on the ASIC chip.

Could someone please provide a nice close up showing these 2 devices ?