I have noticed also that many people ignore the fact that their computer has specific memory installed and that when the computer uses it at full, then every process becomes slower. RamĪlso, in most cases 4GB of Ram seems to be sufficient, but wherever there is more, the computer can perform better with more apps/processes run at the same time. Generally I saw a lot better results when I was formatting the hard disk, re-installing only the applications needed, and only restored personal files/settings of the user - not the complete user library. Also the computer wasn't performing that fast with the whole old system/configuration been upgraded. Whenever I was just upgrading over the previous OS, the installation itself was taking longer time to complete. In all the upgrades I did, I got better results when I installed Yosemite or Mavericks as a clean install on the hard disk. Clean Install against Upgrade over old system. It's true that both Mavericks and Yosemite are performing way better than the previous lions OS's.Īlthough I have heard people complain that after upgrading their mac became slow, I believe that this is not because the OS is not working well, but mostly on factors like lack of adequate Ram, Hard Disk slow performance or very heavy system caused by too many applications, files etc.

I am coming back to post my personal experiences, after having upgrade a bunch of macs (many 2008-2011 models) to mavericks and Yosemite.

2006 macbook pro mavericks