Is it possible to upgrade original iMac (1998) memory (RAM) to above 256 MB? - Ask Different
Apple iMac G3/350 (Slot Loading - Blueberry) - model M5521 - Catawiki
256MB (2 x 128MB) PC100 100MHz 144-PIN SDRAM SODIMM Memory RAM KIT for iMac G3 at Amazon.com
Got my first iMac G3 today! It's a 450 MHz Sage model, with 512 MB of RAM. Had some trouble getting the software restored, but I finally got it all set up. :
iMac G3: RAM shield | davelawrence8 | Flickr
iMac G3 Model M4984 RAM Replacement - iFixit Repair Guide
Repairing and upgrading an iMac G3 (Part 2)
iMac G3 Modern SATA SSD Upgrade + Mac OS 9.2 Install (First Generation Tray Loading Grape iMac) - YouTube
iMac G3 Model M4984 Video Ram Replacement - iFixit Repair Guide
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iMac G3 not seeing RAM | MacRumors Forums
Apple iMac G3 400 DV (Slot Loading - Graphite) - PowerPC G3 - Catawiki
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Apple iMac G3 Memory Upgrades
iMac G3 Model M4984 Video Ram Replacement - iFixit Repair Guide
iMac G3 Model M4984 RAM Replacement - iFixit Repair Guide