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fotoflo
Apr 9, 2007, 09:12 PM
I purchased a MBP 17" 2.16 GHz two weeks before they released the 2.33GHz. The issue is that I would like as much ram as possible. The 2.16 was listed at 2 Gb ram max and the 2.33 is now 3Gb ram. Is it as simple as buying the extra ram I need to make 3 Gb or is it NOT possible...
Help Please!
Thanks


CanadaRAM
Apr 9, 2007, 09:15 PM
If your machine is a CoreDuo, no it does not support 2 Gb SODIMMs

If your machine is a Core2Duo, yes it does.
fotoflo
Apr 10, 2007, 09:24 AM
I know that my machine will support 2Gb ram but I am looking to run 3Gb in my 2.16 GHz. It was listed as a 2 Gb max ram when I purchased it. And the new 2.33 GHz machines max at 3Gb.
My machine is a CoreDuo not a Core2Duo... what is the difference?
Piarco
Apr 10, 2007, 09:33 AM
I know that my machine will support 2Gb ram but I am looking to run 3Gb in my 2.16 GHz. It was listed as a 2 Gb max ram when I purchased it. And the new 2.33 GHz machines max at 3Gb.
My machine is a CoreDuo not a Core2Duo... what is the difference?

The Core2Duo is 64-bit, and can access more memory than the 32-bit Core Duo. Looks like you can only (!) get a max of 2GB for your CoreDuo I'm afraid.
wakajawakka
Apr 10, 2007, 08:02 PM
you mean that a macbook 13" 1.83 core2duo can go up to 4gb because it has 2 slots and core2duo's support 2gb modules?
MarkMS
Apr 27, 2007, 05:29 PM
you mean that a macbook 13" 1.83 core2duo can go up to 4gb because it has 2 slots and core2duo's support 2gb modules?

No, the Macbook C2D can only go up to 2GB. I don't know why, but I'm guessing that it has to do with the logic boards on the Macbook vs the Macbook Pro.
Episteme
Apr 27, 2007, 05:34 PM
you mean that a macbook 13" 1.83 core2duo can go up to 4gb because it has 2 slots and core2duo's support 2gb modules?

Even newer MPBs are limited to 3GB. MB stayed at 2GB, I believe.

The 945 chipset only supports a maximum addressable space of 4GB, and due to needing some memory mapped IO space, you lose a gig there.

No, the Macbook C2D can only go up to 2GB. I don't know why, but I'm guessing that it has to do with the logic boards on the Macbook vs the Macbook Pro.

I presume the reason the MB can only handle 2GB is down to address line routing.

The 965 chipset (part of Santa Rosa) offers 8GB for ram (ie that's what the DRAM controller supports) plus support IO space above it, ie IO doesn't (well, shouldn't; it's implementation dependent) steal form memory space, unlike the older systems that had a 32bit address space restriction.