Apple Memory Mac RAM

See Apple Memory Installation guides (factory upgrade slots use memory not listed here)

See table below for compatible memory modules.
iMac Intel Core Memory	MacBook Memory	Mac mini Intel Memory	Mac Pro and Xserve Intel Memory
Power Mac G5 and Xserve G5 Memory	iMac G5 Memory	Power Mac G4 and Xserve G4 Memory	iMac G4 Flat Panel Memory
PowerBook G4 Memory	Mac mini G4 Memory	eMac Memory	iMac G3 Memory
Power Mac G3 Memory	PowerBook G3 Memory	iBook Memory	Early Power Mac Memory

How to find information about the memory you have in your Mac?
The System Profile from the Apple menu will tell you how much and what kind of memory is in your system.

1. Open the Apple menu, and choose About This Mac.
2. Select More Info and the System Profile screen opens, showing the Hardware Overview.
   This provides you with information you need such as as your Mac model, and total memory capacity and CPU type and speed.
3. In the Contents section on the left, click Memory, this will show your current memory setup.
   This information will tell you which slots are filled and what type of memory you have. It will also tell you how many slots are still available.