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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > 15" G4 1GHz iMac RAM Upgrade

15" G4 1GHz iMac RAM Upgrade
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Join Date: Feb 2003
Location: Pittsburgh, PA
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Mar 12, 2009, 01:15 PM
Hello all,

I've got this G4 iMac, actually it belongs to a friend of mine, it's the 1GHz model which I guess takes DDR RAM. It says that it has 256 in one slot (DIMM1, I believe) I've been trying to look at install instructions but they all seem to vary. I would like to add 512MB, for a total of 768, it's only really used for web browsing and Office and it's running 10.4 so I don't think it's worth going to a gig or higher, especially considering the age of the machine. 512MB is like $20.

There is a user-serviceable slot and another slot right? Which one is DIMM1? I found somewhere that each of these slots are different? If so, what are they?

15" MacBook Pro 2.0GHz i7 4GB RAM 6490M 120GB OWC 6G SSD 500GB HD
15" MacBook Pro 2.4GHz C2D 2GB RAM 8600M GT 200GB HD
17" C2D iMac 2.0GHz 2GB RAM x1600 500GB HD
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