Chapter in this post:
Upgrading the iMac memory is not that difficult on most models. If you want to expand the RAM of the Apple desktop computer, you will find the appropriate steps and recommended DIMM bars in this guide. Because a larger memory in the iMac can only be used if the hardware used is compatible with the system. So just look for your iMac model in these instructions and see what you can install and how - and upgrading the iMac memory will be a breeze!
If you have an iMac from 2012 to 2015 with a screen size of 21,5 inches, then this model from Apple is not intended for replacing or expanding the RAM. And that doesn't just mean that access to the corresponding slots is complicated - no, the built-in RAM is firmly soldered. So if you are considering buying an iMac with a 21,5-inch screen diagonal, you should order the one with more RAM directly from Apple and pay the corresponding surcharge.
First of all, I would like to show you which RAM upgrade is possible with the Apple iMac. For this I list the individual models, the standard RAM and the expansion options:
|iMac model||Installed RAM||Possible RAM|
|iMac Late 2012, 27-inch||8 GB||Up to 32 GB|
|iMac Late 2013, 27-inch||8 GB||Up to 32 GB|
|iMac Retina 5K (Late 2014 & Mid 2015)||8 GB||Up to 32 GB|
|iMac Retina 5K (Late 2015)||8 GB||Up to 32 GB (64 GB *)|
* Note: According to Apple, the iMac Late 2015 is designed for an expansion of the RAM up to 32 GB. However, the manufacturer OWC has brought out a 16 GB RAM bar, which, when used in all four slots of the iMac, delivers a functioning 64GB RAM - at a high price, of course.
According to Apple, of course, you shouldn't use just any RAM to make the iMac more powerful. For the iMac Retina 5K Late 2015, Apple recommends RAM bars with the following specifications:
For older models from the end of 2012 to mid-2015, the manufacturer recommends these data for expanding the RAM in the Apple iMac:
If you want to use different RAM, for example two each with 4 GB and two each with 8 GB, then you should proceed in a structured manner when distributing them. Because it is ideal if you have banks (slots) that belong together with memories of the same size - ideally also from the same manufacturer; best of all the same model - stocked. On the iMac, Banks 1 and 3 and Banks 2 and 4 belong together.
Before I get to the handicraft instructions, I would like to briefly note: If you solder yourself to an iMac model with built-in RAM, the guarantee will of course be void. In the case of models with the Plug & Play RAM described below, the Apple guarantee for the computer is retained even if the RAM is replaced or expanded privately.
Here are a safe step-by-step guide (which I of course copied from Apple). If you want more details and instructions for older iMac and Mac models, you can find the corresponding support article from Apple at the end of this guide. First of all, here are the instructions for replacing the iMac RAM:
While it can be difficult for the layman to expand the memory for operations and processes on the Mac and MacBook, this is kept rather simple with the iMac. That's why there is more such hardware for this Apple computer than for Mac or MacBook. So if you want to expand, swap or replace the RAM in the iMac, then these DIMM models are compatible for the iMacs shown up to mid-2015 (prices accessed on May 26, 2017):
And here are some other models that are intended for the iMac 5K Retina late 2015:
If you want to bring a total of 32GB into your iMacs, then you buy two 8GB double packs and occupy each of the four memory slots with 8GB each. In total you have 32GB of RAM; a very powerful upgrade;)
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After graduating from high school, Johannes completed an apprenticeship as a business assistant specializing in foreign languages. But then he decided to research and write, which resulted in his independence. For several years he has been working for Sir Apfelot, among others. His articles include product introductions, news, manuals, video games, consoles, and more. He follows Apple keynotes live via stream.