Current iMac thermal question

Do the latest n grestest (17 inch) iMacs have overheating issues like the G5 PPCs did ? I'm in Houston,Tx so there is no lack of heat & humidity here and it isn't getting any cooler ...
G3 i   Mac OS X (10.3.9)   iMac in the future

Hi,
Just so you know, G5s are not only slower, but they produce a LOT more heat. I just finished reading an article about the MacPro explaining why Apple changed the design. Their answer: "There was no need for so many fans as was needed with the G5".
-Robert
** O and can someone tell me what the heat inside the iMac is, because the heat inside my AMD Athlon 64 during idle (no load) is 34C with a Zalman fan.

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