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GOOD IDEA TO PUT 4GB IN A MACBOOK?


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CanadaRAM will clarify, but you can put 2 x 2GB in an original MacBook. It will only address 3 however.

2 x 2GB will be matched pairs however and is slightly faster than 1 x 2, 1 x 1 GB.
 
CanadaRAM will clarify, but you can put 2 x 2GB in an original MacBook. It will only address 3 however.

2 x 2GB will be matched pairs however and is slightly faster than 1 x 2, 1 x 1 GB.

You've got that wrong. It works with the Rev B & Rev C Core 2 Duo MacBooks but not the original Core Duo Rev A. It is clearly explained here. It's CanadaRAM's guide by the way :)

You are stuck with a maximum of 2GB with the original MacBook.
 
You say "original" MacBook but your link points to the Late 2006 model. I have the Late 2006 model with 4GB. It only addresses 3 but it has given my MB a new life. The price diff is only $20 between 3 and 4GB and the speed diff is about 5-6% overall so worth the $20 to me. The "original" MacBooks (pre-C2D) can not take more than 2GB. They won't boot with a 2GB stick.
 
2 x 2GB on my 2.16 (Mid-2006) C2D MB...
 

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1. Original Calistoga MacBooks with Core Solo or Core Duo were firmware restricted to 2 gb (thanks Apple! :mad:), even though the controller can support 3 gigs (32 bit addressing).

2. All other Calistoga MacBooks with Core 2 Duo support 3 gigs (even though System Profiler or ATM show 4 gigs).

3. Santa Rosa MacBooks support 4 gigs, perhaps even 8 gigs if Apple hasn't done to them what they did in #1 above.
 
Yea your only addressing 3GB of the 4GB as proven from the activity monitor (Add up Free and Used).

3.3, if my math's right, but the point being there's no problem to 4GB in a pre-SR MB. Sure, I'm not utilizing 700MB (roughly), but I did gain 300MB I wouldn't have with a 2 x 1GB set, there's no performance issues with the machine in doing so, and the difference in cost was all of about $20. And, if I upgrade to a SR (or later) in the future, I've got plenty of RAM to swap over.

I guess all I was trying to point out was that you can safely install 4GB, you just can't use all of it, but still more than 3GB.
 
3.3, if my math's right, but the point being there's no problem to 4GB in a pre-SR MB. Sure, I'm not utilizing 700MB (roughly), but I did gain 300MB I wouldn't have with a 2 x 1GB set, there's no performance issues with the machine in doing so, and the difference in cost was all of about $20. And, if I upgrade to a SR (or later) in the future, I've got plenty of RAM to swap over.

I guess all I was trying to point out was that you can safely install 4GB, you just can't use all of it, but still more than 3GB.

Might want to recheck that math; you're addressing almost exactly 3.00 GB of RAM in that screenshot you put here. (Interesting to see though.)
 
3.3, if my math's right, but the point being there's no problem to 4GB in a pre-SR MB.... <snip>

I guess all I was trying to point out was that you can safely install 4GB, you just can't use all of it, but still more than 3GB.

That's true for the Core 2 Duo pre-SR MacBook.

The Core Duo models are still restricted to a maximum of 2 x 1GB.
 
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