iMovie HD 6.0.3 - Official Apple Support
https://support.apple.com/kb/DL319?locale=en_US28.09.2006 · Additional requirements: - High definition video (HDV) requires a minimum of a 1GHz G4 or faster processor and 512MB of RAM. - Mac OS X v10.4.4 is required for Audio FX; and Quartz Extreme is required for iMovie motion themes, real-time effects, and the Ken Burns Effect. - A .Mac account is recommended for iWeb; fees and terms apply.
iMovie HD 6.0.3 - Apple
support.apple.com › kb › DL319Sep 28, 2006 · System requirements To install iMovie HD 6.0.3, you need: - A Macintosh computer with a PowerPC G4, PowerPC G5, or Intel Core processor (512 MB of RAM required for HDV support) - 256MB of RAM; 512MB recommended - Mac OS X v10.3.9 or v10.4.3 or later; Mac OS X v10.4.4 recommended - QuickTime v7.0.4 or later (v7.0.4 included with iLife ’06)