Greetings All. I'm a reasonably experienced PC repairman that has been hired to determine what is wrong with an iMac G5. I've disassembled it and have found several problems, and need to make a report to my customer. To this end, I need to be able to describe what the 3 large chips on the Logic Board of the G5 are. I assume the chip with the large copper heat pipes and fan is the "CPU", but do not know if that is the correct terminolgoy for an iMac. Also, the other 2 chips. One has a rectangular heat sink that is visible when the viewscreen is removed, and the other is square and can only be seen after the logic board is removed. I'll attach a photo. Thanks in advance.