8Gb memory issue. A Serious Bug for white mac book...

Officially white macbooks (mine is a 2008 early version) do not support 8Gb memory. But indeed there is no problem to install and to make it work. My case was the same. There was no problem during 3-4 hours.

But after a couple of or several hours later, programs consume up the cpu and make the mac virtually freezed-out by heavy cpu occupation. There is no special process eating up the cpu. `Dock', 'Terminal' 'Google Chrome', `Safari', and etc.

My first guess was a kind of Hacking or malware problem. But after a month fight with this issue, I got close to the true reason. After I removed the 4Gb memory, I got no more problems.

The official support is 4Gb. So I don't think Apple will do anything about this. I ordered Snow Leopard in the hope that SL can solve this problem.


Anyone has the same issue like this? I've heard that the first generation of macbook air had similar problem. Apple hardware is not much perfect as we expect from them.

macbook white 2.1G core 2 duo, Mac OS X (10.5.8), macbook

Posted on Feb 8, 2010 8:58 AM

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6 replies

Feb 8, 2010 9:10 AM in response to Prolle

I'll be interested to hear if installing Snow Leopard makes a difference with this problem. My guess is it should have no bearing on what sounds like a hardware design problem even though it enables MacBooks with Core 2 Duos to run things a bit differently (in 64-bit mode).

Curious, why would the white one be any different from the black one? Just sounds like aesthetics to me..

Feb 8, 2010 1:37 PM in response to Lyssa

Lyssa wrote:
The only unofficial number I've heard of for that machine is 6 GB. Nothing I've read has indicated that 8 GB of RAM will work in the 2008 MacBook.


My thoughts too so I checked at macsales.com (OWC) and it's confirmed. Apple supports 4GB and OWC has tested and guarantees 6GB in the early '08. It's not until the White Unibody that 8GB comes into play for a MacBook.

Feb 8, 2010 10:55 PM in response to Prolle

Hi Prolle,

I was unaware that Snow Leopard lifted a physical hardware limitation imposed by the memory controller on the logic board. Leopard is more than capable of handling 8GB+ configurations (we have, two 12GB Mac Pros in my office that run 10.5.8 like a champ).

Regrettably I was unable to track down the same exact MacBook you to put 8GB into and try to run Snow Leopard via the unit. But I do have a similar machine that also choked with a 2x4GB configuration. The MacBook 13-inch Late 2007, Early 2008 and Late 2008 all list as 4GB max supported by Apple but the ability to go 6GB. The Early 2008 I tested did not show any additional RAM allocation under Snow Leopard.

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8Gb memory issue. A Serious Bug for white mac book...

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