Macbook Pro RAM use VS. iBook 4 RAM use

Hi everybody,
This is kind of disappointing to me. I just bought a new Macbook Pro 13" with a 2.26Ghz intel core duo processor and 2GB of RAM memory, with the hope to have twice as much space to have more applications open at the same time than on my old iBook; however, when I opened Activity Monitor I could see that first off, the System Memory window says that .25GB are already being used (by the video card, according to what I´ve read here), but most disappointing of all is that opening just as many applications as I used to on my iBook, the RAM is being fully used, even though I've got 2GB!
Also I can tell that Wired processes are using much more space on the MacBook Pro than on the iBook resulting in a decrease in memory right from the start!
Does anybody have answers for this?
Thanks so much guys!

Hi alexfa,
You'll find http://developer.apple.com/mac/library/documentation/Performance/Conceptual/Mana gingMemory/Articles/AboutMemory.html provides a useful summary of Mac memory usage, including information about the relationship between some aspects of application design, RAM size and "wired" memory use.
You may find http://episteme.arstechnica.com/eve/forums/a/tpc/f/8300945231/m/412007272041 useful, too.
Cheers
Rod

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