- OS X v10.6.8 or later
- 2GB of memory
- 8GB of available space
- Some features require an Apple ID; terms apply.
- Some features require a compatible Internet service provider; fees may apply.
- iMac (Mid 2007 or newer)
- MacBook (Late 2008 Aluminum, or Early 2009 or newer)
- MacBook Pro (Mid/Late 2007 or newer)
- Xserve (Early 2009)
I believe the cost is $20.
It depends a bit on the speed of your connection. I purchased it at the Apple store & used their fast wifi to download. As I recall, that didn't take too long to do. I did not install for awhile though as I had some other things that i needed to figure out 1st (I was running Parallels 5 which was not compatible w Mountain Lion so I had to figure out what to do w that--got upgrade). But then I also came back to Apple Store as I had decided to delete the Bootcamp partition which I had been using as a virtual machine in Parallels. they showed me how & that took about a min.
Then I started the install which I think is suposed to take about 35-45 min. Mine got all the way down to the "about a min left" when it hung. I know from my digital washer & dryer that the 1 min left can be well more than that so I waited & waited. Also asked the open training guy & he said to wait. Well we waited about 45-50 min & he checked w Genius bar & they said to stop it. So I think he had me power down & then power it. Then it started all over again. But this time it went through & finished.
Not sure why it didn't finish the 1st time. I'm glad I was in the Apple store to get their guidance, but was disappointed that the install took all the time so the open training time was over before I finished or right when I finished so wasn't able to get their help w learning some basics.
& yeah, it was $19 or $20.
Looking at this list, http://support.apple.com/kb/HT4132, it would appear yours would be compatible, but I'm not certain. Everything that had a 2.53GHz procecessor appears to be after 2007.
If you look in the System Profiler application, with Hardware selected, it will show the Model Identifier which you can match to the list.