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Hi,
Jun 04, 2014 macergerjeniet June 5, 2014 at 12:51 am. I’m a bit confused; The MacPro 4,1 should support Yosemite, according to Mactracker it supports the latest release of OSX, but I can’t upgrade mine above Lion Graphics card issue? Some of the early models from these lines - 63 different Macs, to be precise - were running Mac OS X Tiger (10.4) or Mac OS X Leopard (10.5) by default and will need to be upgraded to Mac OS X Snow Leopard (10.6.8) prior to upgrading to Yosemite if the operating system has not been upgraded already.
![Yosemite Yosemite](https://papers.co/wallpaper/papers.co-al73-mark-rothko-style-paint-art-blue-classic-36-3840x2400-4k-wallpaper.jpg)
![Macbook pro 5 4 yosemite pro Macbook pro 5 4 yosemite pro](https://wallpapershome.com/images/wallpapers/5k-720x1280-4k-wallpaper-forest-osx-apple-lake-water-yosemite-169.jpg)
No reason I can think of, except the possibility that you may have to upgrade some apps or replace them with something else. See http://roaringapps.com/apps to check compatibility.
El Capitan is the highest OS you can upgrade to: https://support.apple.com/en-us/HT206886
You should not notice a performance difference between Yosemite and El Capitan. El Capitan is basically a 'refinement' of Yosemite, not a major overhaul with additional features like Sierra is. As with (almost?) any Apple OS upgrade, security is improved. As you know, you may have to purchase newer apps for El Capitan. Xbox streaming apple. Some apps which come with the OS will offer updates once you upgrade to El Capitan.
Whether you stay with Yosemite or upgrade to El Capitan, you should upgrade your RAM to 8GBs, the maximum it will allow.
Macbook Pro 4 Monitors
If you decide to replace your aging HD, consider a SSD for much improved read/write performance.
Macbook Pro 5.1
Jul 30, 2017 2:10 PM