![]() T9500 2.6 GHz Core 2 Duo (~$45-60 on eBay at time of article).T9300 2.5 GHz Core 2 Duo (~$15-20 on eBay at time of article).Newer ‘Penryn' CPUs That 2007 iMacs Can Use 2.8 GHz Core 2 Extreme Mid 2007 24″ iMac. ![]() The chipset doesn't see the numbers just right, the 700 MHz is merely a misnomer, nothing more! Original CPUs from 2007 iMacs However, with the right CPU upgrades, High Sierra can be installed. High Sierra requires a newer Mac by default, but it also requires SSE 4.2, which is not present in 2007 iMacs by default. The primary purpose the newer 'Penryn' chips serve is not only an increase in performance, but also the added ability to run macOS 10.13 High Sierra. This article is predominantly aimed at helping people get a 'Penryn' Core 2 Duo CPU into their Early 2007 iMac, as the chipset does allow several 'newer' CPU upgrades. There is an earlier article by Dan Knight about CPU upgrades in the 2007 iMac that omits a few possible upgrades. These Mac models are compatible with macOS High Sierra: MacBook (Late 2009 or newer) MacBook Pro (Mid 2010 or newer) MacBook Air (Late 2010 or newer) Mac mini (Mid 2010 or newer) iMac (Late 2009 or newer) Mac Pro (Mid 2010 or newer). ![]() For details about your Mac model, click the Apple icon at the top left of your screen, choose About This Mac. This process involves the use of 'macOS High Sierra Patcher', whi. In this video, I go over the process of installing macOS High Sierra on an unsupported Mac. #BLUE MICROPHONE NOT WORKING ON MAC OS SIERRA VISTA INSTALL#My doubt was the same that I was reading on this page because I found another page where they tell that you cannot install directly for exemple the 10.3.6 if you have 10.2. I have a macbook pro, mid 2010, but I know that is possible to install High Sierra, is the last that I can install in this mac. Can we put macOS High Sierra on a 2009 17 inch iMac? We shall see in this Retro Adventure:o) My social media.
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