Does anyone know where the istats menu "backside chip" on a powermac g5? I have a really high reading from that chip 399F. The drive bay reads over 8000F, I don't have a hole in my floor so I know that one is wrong. It is a Dual 2.0 June 2004 powermac g5 with 10.5.8. There is three chips with heatsinks on the back of the logic board. Is it the one under the pram battery by the pci-x slots with the medium size heatsink ? Is it 1 ,2 ,3 ? Thank you for any help.