The model I most recently upgraded is a 2011 vintage 27-inch iMac and although Apple lists it as supporting a maximum of 16GB of RAM, in fact it will recognize and utilize 32GB. That could be great news if your iMac is currently equipped with the maximum amount of RAM and you’re hitting a performance ceiling. If you see inaccuracies in our content, please report the mistake via this form.Apple publishes guidelines for the maximum amount of RAM each iMac model supports, however the company is known for being conservative and memory upgrade specialists have discovered many iMacs are actually capable of supporting twice the amount of RAM Apple suggests. If we have made an error or published misleading information, we will correct or clarify the article. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. ZDNET's editorial team writes on behalf of you, our reader. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers. Neither ZDNET nor the author are compensated for these independent reviews. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. ZDNET's recommendations are based on many hours of testing, research, and comparison shopping.

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