[geeks] Business Decision Help, Please

[nate at portents.com]

> Anyone upgrade a 2.16 GHz MBP to 4 Gigs? (Crucial says 3072 is max.)

Pre "Santa Rosa" Intel mobile chipsets didn't support mapping the I/O
space above the 4GB physical mark, so you end up with I/O space consuming
physical address space, and losing that physical address space (i.e. it
won't hurt anything to install 4GB, but you won't be able to use it all). 
It was a bit of a daft oversight in my opinion, since Intel has supported
re-mapping the I/O space on other (non-mobile) chipsets well before Santa
Rosa.

- Nate