Re: OT: Which MacBook Pro to buy
Re: OT: Which MacBook Pro to buy
- Subject: Re: OT: Which MacBook Pro to buy
- From: j o a r <email@hidden>
- Date: Sun, 18 Jan 2009 09:49:05 -0800
On Jan 18, 2009, at 7:21 AM, Chris Jones wrote:
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) ?
The amount of memory that can be managed by the kernel in existing and
earlier versions of Mac OS X has been larger than 4 GB for ages. While
individual 32-bit apps can only address ~4 GB (or between 2 - 3.5 GB
for practical purposes), the system as a whole can of course still
benefit from having more physical memory available to avoid contention
and paging.
j o a r
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