Model A1174 with 2 GHz Core Duo or Model A1207 with 2.16 or 2.33 GHz Core 2 Duo

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Maximum ram possible on my iMac?

I bought an iMac from a friend from late 2006. The max supported ram is 2gb at least that is what i found on the internet.

If i would insert 2 x 2gb of ram would the pc just not work or not be effective at all? Just trying to find out of it has any use. Heard that sometimes it is possible to upgrade.

Please help :)


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What is confusing is what you can install from RAM modules and what the system See's will be 4 GB but the last 1 GB of RAM is not accessible to the OS or the Apps. The older 32bit CPU architecture used fixed memory addressing for video and other services. Which within the Intel Core 2 Duo support logic which just above the 3 GB memory space which locks out the last 1 GB from being used. If you click on the blue link I posted you'll see this - From EveryMac:

Maximum RAM: 4 GB*

*Apple officially supports 3 GB of RAM, but third-parties have been able to upgrade the system to 4 GB of RAM using two 2 GB memory modules with some limitations.

RAM Specs: 667 MHz PC2-5300 DDR2 SDRAM (200-pin SO-DIMM).

Limitations: Rather unusually -- for the "iMac (Late 2006)" models -- Apple notes that:

Although these iMacs will accept up to a 2 GB SO-DIMM in each of the two memory slots, the iMac will only support 3 GB total memory. If you want to maximize the amount of SDRAM in your computer, install a 2 GB SO-DIMM in one slot and a 1 GB SO-DIMM in the other. . .

If you do install a 2 GB SO-DIMM in both the bottom and top memory slots of the computer, the About This Mac window and Apple System Profiler will both show that you have 4 GB of SDRAM installed. However, Activity Monitor and other similar applications will reveal that only 3 GB of SDRAM has been addressed for use by the computer.


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So just install 3gb of ram because else ill "lose" 1gb if i install 4?:)


Either way! Its just a matter of cost. often you can get a pair of 2 GB modules cheaper and a mixed set.




Martijn van den Hurk さん、ありがとうございました!

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