Re: OT: Which MacBook Pro to buy
Re: OT: Which MacBook Pro to buy
- Subject: Re: OT: Which MacBook Pro to buy
- From: Chris Jones <email@hidden>
- Date: Sun, 18 Jan 2009 15:21:13 +0000
Hi,
Not really answering, but it's my understanding that the limitation
to 4GB is not really a hardware one for the 15". I've even heard of
6GB upgrade currently available and demonstrated... I might be wrong
though.
Yes, I've read the same reports and would tend to agree and likely a
software constraint. What matters is the kernel and in OSX 10.5 this
is still 32bit. This normally limits memory to around 4G which is what
you are seeing. For the 17in macbook pro (and other mac pros) to
support more, then are presumably running some sort of LBA kernel,
which performs various tricks to allow more ram to be accessed by the
OS (although a single process is still limited) ?
I've also read that 10.6, when it comes out will switch to a 64bit
kernel, where possible, which will naturally allow all 64 bit capable
machines to access a lot more than 4G out-the-box. At this point my
guess is the 4G limit might be lifted on current 15in macbook pro
machines, but this is pure speculation.
I would say, if you can wait until 10.6 comes out and see what that
brings...
Chris
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