How to view my memory?

i have macbook pro and new imac
How can i see my memory or how much memo have i used and have left??

It is a little deceptive. In addition to free memory you also have wired memory. This is an amount the OS has set aside for the system. Tons of free ram and a decent sized wired memory is good.
Your bottom line is performance. If the “pages out” portion reads zero then your machine is not accessing the virtual memory, which is tons slower.
There is no better (and cheaper) upgrade to your machine than ram. I would max out your ram as soon as possible.
Some tasks are slow or stutter not because of your ram situation but because of your video ram. Intensive graphics, games, Garageband, etc. need a good graphics card to run well. You can see what you have by selecting the Apple menu and clicking on “ About this mac.” Click on the “More Info” button and select “Graphics/Displays.” You will see information about your VRAM. (Video ram) If your video ram is shared with your other ram then it is even more vital to get more ram.
Excellent article:
http://sg80bab.blogspot.com/2007/03/is-my-mac-using-too-much-memory.html
Kurt

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