The Max RAM on the Beige g3's (all models) -- despite ambiguous Apple documents -- is 3*256 MB DIMMs, but they must be just the right DIMMs. If you have to buy more, get RAM for The Blue & White G3, as it is rated slightly faster, but is identical in every other parameter. The module height on the MiniTower should be no problem -- the desktop model has a height limit.
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Ram for a G3
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