I am looking into buying myself an original iMac, and I want to mess with the older system a little bit. Also, is it even remotely possible to change the RAM in the system to being over 256 MB. I am willing to do it even if it means changing out other parts to allow it to be possible.
The maximum amount of RAM that the iMac G3 could accept was 384MB for the Rev. A model and 512MB of RAM for the Rev. B model.
This was done with a 128MB and a 256MB module or two 256MB modules of 144pin PC66 RAM, respectively.