ATI has finally announced the arrival of the Mobility Radeon 9000 and Mobility Radeon 7500 graphics-processing units inside new G4 PowerBooks and iBooks – over three weeks after Apple released the details.

The solutions support up to 64MB DDR RAM (in the Radeon 9000) or 32MB DDR RAM (in the Radeon 7500).

"The Mobility Radeon 9000's version 1.4 pixel shaders bring exciting new special effects to Apple's mobile users. The Mobility Radeon 7500 accelerates 3D-visual effects, and enables crisp full-frame-rate DVD video," said Reuven Soraya, director of marketing, mobile business unit, ATI Technologies.

Apple's vice president of hardware product marketing Greg Joswiak said: "By choosing the world's fastest, most feature-rich mobile graphics processors for both the PowerBook and iBook, we're delivering best-in-class graphics performance to our professional and consumer portable customers."