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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

MacBook - Using 800mhz ram in a 2.1 Penryn

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Member Since: Jul 10, 2007
Location: San Juan, PR
Posts: 39
xcapepr is on a distinguished road

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My sister got her first Mac, a 13.3 2.1 Macbook, mostly because of me.

Well anyway, it only came with 1GB of ram as its the cheapest one. I poked around OWC's site only to find that the MacBooks still use 667 ram even if the FSB is now 800Mhz.

Is this cost cutting on Apple side or is there a hardware limitation and can only use 667 ram?

I have the two 1GB modules I took out of my iMac when I upgraded to 4GB. Will they run fine in the Macbook or will they get underclocked to 667? Is it better just to get new RAM?

iMac 24' Penryn - 2.8Ghz, 1TB Seagate Baracuda ES.2, 4GB OCZ PC-6400
MacBook Pro 15' Memron - 2.2Ghz, 250GB WD Scorpio, 4GB OCZ PC-5300
iPhone 3G 16GB
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Member Since: Apr 23, 2008
Location: Denver, Colorado
Posts: 44
AngryGreek is on a distinguished road
Mac Specs: Macbook C2D 2GHz 2GB RAM 80GB HDD

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It'll most likely just down clock the memory to 667Mhz if you put 800 in there.
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