ZDNet points out that memory sales company Ramjet has published on their website that the recently MacBook and MacBook Pros can support a maximum of 6GB of RAM. This configuration is possible with the use of one 2GB and one 4GB stick.
This finding is consistent with the experiences of previous MacBook Pro owners. 8GB of RAM has been shown to cause stability issues under Mac OS X when the additional RAM is accessed. For some reason 6GB appears to be the practical limit on the latest MacBook Pros, despite hardware support for 8GB.
Apple officially advertises that the new laptops can only support up to 4GB of RAM.
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