41 GB download and an additional 41 GB for the installation process. Mac OS X 10.6 or higher, 64-bit Intel-based Mac with 4 GB RAM (8 GB RAM or more recommended).64-bit host (with support for VST, AU or AAX).
The system requirements from the product page:Ħ4-bit Windows 7 or newer, 4 GB RAM (8 GB RAM or more recommended).