Model A1311 / Mid 2011 / 2.5 & 2.7 GHz Core i5 or 2.8 GHz Core i7 Processor

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Can you install 12GB of total RAM? 2 8GB + 2 2GB

I just installed 2 8GB sticks of ram in my iMac, but it has 4 slots. I just confirmed that this iMac can handle up to 32GB of ram. So my question is, can I use the original 2 2GB sticks in slots 3 and 4 - for a total of 12GB of ram. Thank you!

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Yes! You can boost your system to 12GB as long as you put the modules in the correct slots! Each pair of slots is setup as a Bank 0 and a Bank 1 (left & right) you need to put matching modules in the same bank set: Upper Banks 0 & 1 or Lower Banks 0 & 1. Here's Apples TN on memory specs: iMac: Memory specifications and upgrades and this one on how: iMac: How to remove or install memory

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OK I just put them in and they are working!! 20GB of ram! Bad math oops haha 16 + 4! Thank you Dan!

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If will take up to 32GB of course.

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Steven Busa will be eternally grateful.
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