- Jul 6, 2013
Hey, my iMac 5k 2015 (17,1) runs fine on El Capitan but with Mojave on the horizon I am thinking of upgrading to Sierra or High Sierra. Wondering if anyone has any advice? I have a 2012 Macbook Pro at home running Sierra fine but that one runs off an SSD and the iMac is the spinner plus ssd fusion drive thing which has me hesitant about High Sierra. I have an ancient 2009 iMac that I hack upgraded from Sierra to High Sierra and noticed considerable performance improvements in High Sierra than Sierra but that is an old machine so probably not the best benchmark. Anyhow, happy with El Capitan but don't like to stagnate on one OS for too long. Thoughts?