Hey guys i just bought an iMac G5 Rev. C I have the standard 512MB DDR2 in it right now. I am going to get more memory for christmas i am just not sure whether i should just go with another 512MB and have 1GB (all i ever had in my pc seemed fine) or get 1GB and have 1.5GB. I mainly surf safari pages, use iChat, MSN Messenger, iTunes, and stuff like that all at once. I plan to eventually get into some photo editing when i get a digital camera here shortly. I am also thinking of doing some video editing to maybe. But yeah basically i could get the 1GB for christmas but i was thinking if i just get the 512MB i could also get a 250GB external HDD. Now i am not sure if i would benefit from the 1.5GB anymore than i would the 1GB. Anyone with experience can you please tell me does the 1.5GB make the computer that much faster than if it had 1GB?