Apple today unveiled its new 1 GHz 17-inch PowerBook G4 at Macworld Expo in San Francisco, the largest screen notebook on the planet. The new PowerBook is encased in an aluminum alloy enclosure, measures 1-inch thick, and weighs 6.8 pounds. In addition, this beast includes built-in AirPort Extreme 54 Mbps 802.11g wireless networking, new high-speed FireWire 800, a backlit keyboard with ambient light sensors, built-in Bluetooth connectivity, and a slot-loading SuperDrive. It also includes the NVIDIA GeForce4 440 Go graphics processor and 64MB of dedicated video memory capable of delivering 880 million textured pixels per second and advanced transform and lighting. The new 17-inch PowerBook G4 is expected to be available in February for a suggested retail price of US$3,299.