15'' MacBook Pro Memory question

Anti · 10-09-2009, 02:21 PM

Hello all,

I've got a 15'' MacBook Pro (Late 2008) that I want to max out with 4GB of memory. It was purchased in January 2009.

I've heard of these models panicking and crashing when given the maximum amount of memory they can take. Does anyone know if this has been fixed? I'd like to know before I plunk down a lot of money for the upgrade.

Thanks in advance.

DeltaMac · 10-09-2009, 03:22 PM

According to MacTracker - your Late 2008 MacBook Pro can have up to a pair of 4GB chips, for a total of 8 GB, depending on the processor that you have:

Quote:


	8.0 GB (2.66/2.93 GHz) or 6.0 GB (2.4/2.53/2.8 GHz) (Tested) or 4.0 GB (which is what Apple suggests for those models)

I recall that some tried a pair of 4 GB chips in the older of those models, with lots of crashing, etc - which must be what you are referring to. The memory controller would work with 1 x 4GB, but not a pair of 4GB, so the limit is 1 x4 GB, and 1 x 2 GB chips for a total of 6 GB.
Yes, Apple took care of that problem by upgrading the logic board to support 2 x 4 GB in the later models.
So, it depends on which processor you have.

Anti · 10-09-2009, 05:06 PM

I've got the 2.4GHz model. I'm just planning to do 2x2GB, so if that definitely works, then I'll be doing it.

DeltaMac · 10-09-2009, 07:58 PM

You'll be good with that. As I said, the major problem comes if you try to install 2 4GB chips. If you want to see the difference in cost - compare the price for your 2 x 2 GB set, to one 4GB and one 2GB... Still pretty pricey.

10-09-2009, 02:21 PM	#1
Anti MVP Join Date: Dec 2006 Location: Concord, CA Posts: 1,530	15'' MacBook Pro Memory question Hello all, I've got a 15'' MacBook Pro (Late 2008) that I want to max out with 4GB of memory. It was purchased in January 2009. I've heard of these models panicking and crashing when given the maximum amount of memory they can take. Does anyone know if this has been fixed? I'd like to know before I plunk down a lot of money for the upgrade. Thanks in advance. __________________ Xodium Dot Net.

10-09-2009, 05:06 PM	#3
Anti MVP Join Date: Dec 2006 Location: Concord, CA Posts: 1,530	I've got the 2.4GHz model. I'm just planning to do 2x2GB, so if that definitely works, then I'll be doing it. __________________ Xodium Dot Net.

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10-09-2009, 07:58 PM	#4
DeltaMac League Commissioner Join Date: Jan 2002 Posts: 7,958	You'll be good with that. As I said, the major problem comes if you try to install 2 4GB chips. If you want to see the difference in cost - compare the price for your 2 x 2 GB set, to one 4GB and one 2GB... Still pretty pricey.