In the last Apple keynote the company showed new models of iMac, MacBook Pro, MacBook and MacBook Air. We have already talked about the MacBook Pro this week and we have seen that Apple does not add the option of doubling this amount of RAM in their computers up to 32 GB. In any case, what we now have on the table is the confirmation from OWC that all 27-inch iMac models can mount up to 64GB of RAM And we're not talking about the iMac Pro beast they featured, we're talking about the regular models.
If you are going to buy a 27-inch iMac that is the most basic in RAM
Let's clarify that in the case of 27-inch models there is an option available in the Apple store to increase the different models to 64 GB of RAM Except for the one that adds the 5 GHz quad-core Intel Core i3,4 processor. In this case, according to Apple, this iMac supports a maximum of 16 or 32 GB of RAM and the rest of the models that start with the Intel Core i5 quad-core processor at 3,5 GHz, are already compatible with 64 GB of RAM .
In this list made by MacSales we found that all 5-inch iMac with Retina 27K display, which mount i5 & i7 processors are certified and tested to carry a maximum of up to 64GB. So when buying one of these 27-inch computers, the best advice is to buy the 8 GB model with two 4 GB DDR4 2.400 MHz memory modules, since the four accessible SO-DIMM slots allow us to expand it up to 64 GB whenever we want and in a much cheaper way than choosing the most powerful configuration in the Apple Store. Of the 21,5-inch model there is obviously no data since it does not have access to the RAM through the rear "cover" that the 27-inch models have.