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

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memory upgrade on an old 2007 iMac

I have and imac 1gb 667 mhz ddr2 sdram, 2.4 ghz intel core 2 duo. would like to upgrade the memory. Is it worth it and if so, would i have to remove the current memory to repalce with 2gb or 4gb?

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Assuming your machine is either this 20" or a 24"

Standard RAM: 1 GB Maximum RAM: 6 GB*

Details: 1 GB of RAM is installed as a single SO-DIMM module.

*Apple officially supports 4 GB of RAM, but third-parties have been able to upgrade the system to 6 GB of RAM using one 2 GB and one 4 GB memory module.

To save some bucks, just install an additional 4GB stick and take it to a total of 5.

You should then be able to upgrade the OS X

Pre-Installed MacOS: X 10.4.10 (8R4031) Maximum MacOS: X 10.11.x*

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