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Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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Does the iMac 7,1 (EMC 2133) support 800 MHz RAM?

I’m planning to upgrade my recently restored iMac and would like to know if I could use 800 MHz sticks or if I’m stuck with 667. Also, I’ve heard that this machine can go beyond its 4gb limit to 6gb. Is this true?

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You won’t get any better performance as the systems I/O is clocked based. The CAS and RAS timing can be too short causing errors when using too fast RAM. And yes while Apple only lists 4 MB you can go upto 6 MB using one 2 GB SO-DIMM and one 4 GB SO-DIMM and the speeds need to match!

I would stick to the spec’ed RAM.

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Ok, thanks. I'll keep that in mind.

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Zachary Rushworth will be eternally grateful.
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