4GB minimum; 8GB or more strongly recommended for complex sessions.
The most stable and recommended version. avid pro tools hd 10310 for macos
Officially, Avid Pro Tools HD 10.3.10 is designed for older Intel-based Macs. It is on macOS 10.9 (Mavericks) or any newer versions including High Sierra, Mojave, or the latest macOS Tahoe. Qualified Operating Systems: 4GB minimum; 8GB or more strongly recommended for
Fully supported for HDX, HD Native, and HD Accel systems. and HD Accel systems.