3

I've been using my MaBook Pro happily for months but only recently realized that 1 GB is missing. Is there something wrong with my MacBook? It seem to runs fine.

Improve this question
1
  • What MacOSX version? I have a very similar problem. Though I could access all the 4GB under MacOSX 10.5 -- I only have the problem since MacOSX 10.6.
    – Albert
    May 12, 2010 at 22:28

2 Answers 2

Reset to default
7

Usually this is because you're using a 32-bit operating system rather than a 64-bit one.

UPDATE: Apparently, this is a chipset limitation in the earlier Macbook Pros

Improve this answer
3
  • No - my wife's MBP can only address 3Gb, and mine can address 4Gb, and we're running exactly the same OS.
    – Paul Tomblin
    Jul 21, 2009 at 2:07
  • 1
    Updated my answer.
    – Stefan Sveidqvist
    Jul 21, 2009 at 2:13
  • Good. Removed my downvote.
    – Paul Tomblin
    Jul 21, 2009 at 11:00
0

Which MBP? My wife's 3 year old 15" MBP has a published maximum memory of 3Gb. My 1.5 year old 17" MPB has a published maximum memory of 4Gb.

Improve this answer

You must log in to answer this question.