[Turbojugend]

I know apples site says 2 gigs is the limit, but has anybody successfully been able to put 3 gigs in it? I don't think I'll need more than 2, but I am just curious, cause I have the cash for 1x 2gig stick if it can take 3

Thanks in advance.

[jough]

I'm pretty sure you have to put a matching pair in the MacBook, so you'd have to go with 4Gb. I'm also pretty sure that the bus can't access more than 2Gb.

Can anyone else better explain the technical reasons behind that? Is it because the Core2Duo isn't a 64-bit chip?

[mduell]

The chipset supports 4GB of physical memory; due to some PCI addressing issues you can only use 3.2GB of it. The Macbook does not require memory to be installed in pairs, it's just a good idea for graphics performance.

But as far as I know, Apple has limited all the Core Duo Macs to 2GB memory with the firmware. The Core 2 Duo Macs support 3GB with the same chipset due to a change in the firmware. It has nothing to do with 64-bit.