I'm interested in taking a Udacity course, but the technology course requirements state that the operating system for Macs should be OS X 10.11 and higher.<p>I was always content with leaving my MacBook Pro at OS X 10.8.5. I'm a little bit hesitant about what will happen with my machine after updating. Will it run a lot slower, or should I be fine? Also, should I update to OS X 10.11 or higher?<p>Thanks.
I'm running Mojave (10.14) on an Early 2013 MacBook Pro, and it's seems to run just like when it was new. That said I do have the quad-core i7 model, so YMMV if you have a dual-core or i5 model.