RAM Mac

[Aiden]

I have no idea how ram and stuff works :L But I know that you can buy upto 4 in my computer. I have 2 atm (2gb each) if I buy another 1/2 do they have to be 2gb or can they be more? (I'm paranoid :s)+Rep

[HarrySX]

You can use a combination of different size sticks.

[Kieran]

What kind of Mac have you got? Depends how many slots you have as to whether buying another stick of that size is any use.

[mrwoooooooo]

do this test

http://www.crucial.com/uk/

[Aiden]

What kind of Mac have you got? Depends how many slots you have as to whether buying another stick of that size is any use.

http://img809.imageshack.us/img809/286/44589177e2a84ead95d61a2.png

That irl

[mrwoooooooo]

http://www.overclockers.co.uk/showproduct.php?prodid=MY-330-CS&groupid=701&catid=8&subcat=1516

[Sunny.]

You can add any size sticks though some argue that for example the bottom two should match. So in your case
2GB 2GB
1GB 1GB

or

2GB 2GB
2GB 2GB