Is it located by the CRT or underneath the computer? I don't know because I didn't find any heatsinks.
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Where is the CPU located in the iMac G3?
- Thread starter LOLZpersonok
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There is one, but it's tiny; about 1cm thick.
It's under the CRT, about 6 inches behind the disc drive.
I'm assuming you have a slot loading G3 iMac, because the tray loading ones have a heat sink. If the iMac is upside down with the white bottom cover off, the CPU is located on the CRT side of the logicboard. It uses the EMI shield between the two halves as a heat sink with a heat dissipation pad between them. It is roughly located in the middle of the logicboard. You can tell where it is because you'll see a large square patter of traces and solder points on the logicboard.
Slot loading CRT iMacs don't have a daughter card. The CPU is soldered directly to the logicboard.
Ahh cool, I've never had to completely tear down a slot loader, only along time ago did I open up the door of one to install some RAM. Never owned a slot loader, only the Rev A Bondi Blue one with the IR port and mezanine slot.
I had a spare logic board off a 500MHz slot loading iMac g3 so i pulled it out to take a pic.
The CPU is the silver chip in the picture.
The CPU is the silver chip in the picture.
Ah yes, I have an idea now. I guess I didn't recall it until I saw your post. I think the small heatsink I saw may be it. Thanks, I was really wondering about it.
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I had a spare logic board off a 500MHz slot loading iMac g3 so i pulled it out to take a pic.
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The IBM chip? Did IBM manufacture the PowerPC CPU's in the older Macs?
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I already know that. It's unfortunate that they didn't include it on a Daughtercard, the CPU could have been upgradeable.
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Yeah, it's the slot-loading 350MHz iMac G3. I think I remember seeing it, but before I wasn't sure what it was because it was so small.
Pre-G3, G3, and G5 were IBM. G4's were Motorola. IBM, Apple, and Motorola all had a part in making all four versions.