I have 1GB of memory in my home PC .. when i open Photoshop and Illustrator at the same, time to do some work, i can deal with big files without any slowness most of the time.
My work PC with 512MB will slow down at some points due to page file usage.
If you do a lot of digital work with big files and you have a solid OS (win2k XP or linux) then this deal is a great one.
Besides, Crucial is the best