iMovie requires a Mac with an Intel processor, a Power Mac G5 (dual 2.0GHz or faster), or an iMac G5 (1.9GHz or faster).
This marks what is perhaps the first instance of Apple dropping G4 support in a consumer application.
The rest of the iLife ’08 suite will run on G4 Macs, at least as far as Apple’s official requirements state:
• Mac computer with an Intel, PowerPC G5, or PowerPC G4 processor.
• iMovie requires a Mac with an Intel processor, a Power Mac G5 (dual 2.0GHz or faster), or an iMac G5 (1.9GHz or faster).
• iDVD requires a 733MHz or faster processor.
• 512MB of RAM; 1GB recommended. High-definition video requires at least 1GB of RAM.
• Mac OS X v10.4.9 or later.
• 3GB of available disk space.
• DVD drive required for installation.
• QuickTime 7.2 or later.
• Other configurations may be supported. AVCHD video and 24-bit recording have additional requirements. Visit iMovie ’08 Camcorder Support for more information on AVCHD.
• 24-bit recording in GarageBand ’08 requires a Mac OS X compatible audio interface with support for 24-bit audio. Please consult the owners manual or manufacturer directly for audio device specification and compatibility.
• Burning DVDs requires an Apple SuperDrive or compatible third-party DVD burner.
• iPhoto print services are available in the U.S., Canada, Japan, and select European countries. Internet access required; fees and terms apply.
• iWeb requires Internet and web server access (.Mac recommended).
Some features in iLife require .Mac. The .Mac service is available to persons age 13 and older. Annual membership fee and Internet access required. Terms and conditions apply.
More about iLife ’08 here.
[Thanks to MacDailyNews Reader “Ian” for the heads up.]