[iT4c0]

Ok, I right now have 512mb ram on my 17"FP 800mhz imac. 256mb build in and another extra 256mb. I do a lot of photoshop, illustrator, indesign works. I also have a lot of applications running in the background when I am doing my work. Somehow I feel my imac is being very slow when I have everything running. Will it help If I upgrade to 1GB? How do I upgrade my internal memory to 512mb and so I can stick in another 512mb? Can I do it at Apple store genius bar? Thanks for the help~

[macmad]

Will it help If I upgrade to 1GB?

Definitely! OS X loves RAM.

How do I upgrade my internal memory to 512mb and so I can stick in another 512mb?

You need to open the dome to get at the main RAM slot - it is not 'user' accessible and finding it will void your warranty. You will also need some heat sink compound (white gunk) to put between the metal heatsink parts on re-assembly.

The easiest thing would be to fit 512meg in the user slot, giving 768meg total. This is enough of an upgrade to make a difference, and saves you getting into major mac surgery.