What is TEMP 3 On Speedfan for P5W?

Umm I'm a little scared speed fan reads

Temp 1: 44C
Temp 2: 24C
Temp 3: 106C (What is this?)

Someone said it was video card on another forum but I'm running a 7300gs (temporary my 7900gtx is broken) at stock speeds, why the hell does it read so high?

It's probably a bogus reading.

You could stick your hand in the case and feel it if ANYTHING was running 100c+