I do not have an iMac (Mini) but I had some discussion in a few threads before. Now, some people like to know if the Intel HD is enabled by default in the 2012 iMacs. The threads we discussed this in are: 7 kernel panics in 7 days. Brand new iMac. Post #9 and onwards. And: help newbie buying first Mac - rMBP 13: IR test and other tips needed Post #3 and onwards. Now, it's as simple as a screenshot from System Information>Graphics, the App is in /Applications/Utilities. Thanks to anyone posting a screenshot.