I understand that this was briefly mentioned in a recent thread (which I can't locate now) so if I'm just causing trouble by posting this feel free to lock but I'm still curious. Up until now I'd never heard anything regarding matching RAM amounts when upgrading (ie: 512+512 vs. 512+1gb) and how it's better than mixing RAM amounts but after reading a recent thread became interested. I'm buying an iMac G5 next week and planned on buying a 1gb RAM stick (not from Apple, most likely CompUSA) but from what I understand, it would make more sense for me to have 512+512 rather than 512+1gb. I was just wondering if I completely read that wrong or not. It seems to me that it would make more sense to buy a 1gb stick but.. eh, I don't know. Anyone?