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video ram hasn't been upgradable for a long time, especially now that they use special memory. the only way to get more vram is if the card manufacturer includes it, so apple just uses a vid card with more vram now. if any of this is wrong, i'm sorry; not much of an expert. it's all on an "iirc" basis lol
i should put that in my sig...
 
Well, if you can get the chips, and you're REALLY good with a soldering iron, it's theoretically possible to replace lower capacity chips higher capacity ones, assuming everything else is equal. And that's assuming you can even get at the chips, which on most video cards today, you can't.
 
Thanks everyone for the vid info. So a new card is all it takes to go from 64 to 128MBthen? That's all I needed to know. Thanks
 
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