Computer memory (RAM) is typically installed in megabytes (MB) or gigabytes (GB), typically in some combination of 256 MB, 512 MB, 1 GB or 4 GB. One MB is 1,000,000 bytes. One GB is 1,000,000,000 bytes.
For Mac OS X:
Go to the Apple menu and select "About this Mac".
The amount of RAM you have will be displayed in the window that appears, next to "Memory".
Not the answer you were looking for? Try different keyword combinations and if you still can’t find your answer, please contact us.