Mac OS X Lion System Requirements
In order to install Mac OS X 10.7 you will need:
- Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
- 2GB of RAM
- Mac OS X 10.6.6 or later with the Mac App Store installed
- At least 4GB of additional disk space to accommodate the download, but more is obviously recommended
And then there's the "C" word. Compatibility. Since Lion will NOT support Rosetta, Apple's dynamic translation process which allows software built for PowerPC's to run on Intel Macs, many earlier applications like Eudora and Quicken will not work. So it's best to check to see if the software vital to you is compatible.
Here is a compatibility table by roaringapps.com:
Will I upgrade right away? Well, I will back up my system using SuperDuper, and jump right in. Then if there is too much freak happening, I'll restore to 10.6. But yes, I am a risk taker. Open the gates and let 'er buck.