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Model A1418 / Mid 2014 / 1.4, 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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Is it possible to upgrade the motherboard/CPU/RAM?

I have had this iMac for about 5 years at this point and I would like to upgrade it as it is getting slow. Apparently it is very difficult to upgrade, thus I want to ask, is it possible at all to upgrade the CPU, logic board or RAM on this computer and is it worth the effort?

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Sorry Apple sometimes makes orphan systems ones which are the only one in a series. Intel is the root issue here as they brought out a few odd ball CPU’s as they needed something to fill the void of not offering the 10 nm chips they were expected to deliver!

So here is the different series Apple intro’d around that time:

Note the Family ID (last value in the description) is different between each. You can’t swap out the CPU’s as each one uses a different micro code (Haswell Vs Broadwell) which is held in the EFI (that’s typical for Apple). Replacing the logic board would be the only option but again Apple makes it hard! There are differences with the display connections between the (iMac16,1 Vs iMac16,2)

Here’s an example where Apple used the same Family ID across very different logic boards iMac16,2 Here Apple used the same CPU series across multiple systems (same micro code) but different logic boards & displays!

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Thanks for the info

da

@Mark - Don't forget to score the answer and accept it - Sorry I couldn't offer you something better.

Look at boosting the RAM and getting a SSD Vs HDD or Fusion Drive (which are slower)

da

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Mark sarà eternamente grato.
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