CHAPTER 2

Architecture

Main ICs and Buses

The architecture of the PowerBook G4 17-inch computer is designed around the PowerPC G4 microprocessor and Intrepid IC that contains the memory controller and I/O device controller.

The PowerPC G4 microprocessor is connected to the Intrepid IC by a MaxBus bus. The bus clock speed is 167 MHz. Other buses that connect with the Intrepid IC are summarized in Table 2-1(page 19), which is in the section “Intrepid Controller and Buses” (page 19).

The Intrepid I/O controller has a 32-bit PCI bus with a bus clock speed of 33 MHz. That bus also connects to the Boot ROM and the CardBus controller. The Intrepid IC has other buses that connect with the hard disk drive and the optical drive, the power controller IC, the sound IC, the internal modem module, and the wireless LAN module.

Each of the components listed here is described in one of the following sections.

Microprocessor and Caches

The microprocessor communicates with the rest of the system by way of a 64-bit MaxBus bus to the Intrepid IC. The microprocessor has a separate bus to its internal second-level cache.

PowerPC G4 Microprocessor

The PowerPC G4 microprocessor used in the PowerBook G4 17-inch computer has many powerful features, including an efficient pipelined system bus called MaxBus.

Features of the PowerPC G4 include

32-bit PowerPC implementation

superscalar PowerPC core

Velocity Engine (AltiVec technology): 128-bit-wide vector execution unit

dual 32 KB instruction and data caches

an on-chip level 2 (L2) cache consisting of 256 KB with a clock speed ratio of 1:1

high bandwidth MaxBus (also compatible with 60x bus)

fully symmetric multiprocessing capability

The PowerPC G4 microprocessor in the PowerBook G4 17-inch computer runs at a clock speed of 1 GHz.

18Microprocessor and Caches

Legacy Document 2003-03-01 © 2003 Apple Computer, Inc. All Rights Reserved.

Page 18
Image 18
Apple 17-INCH manual Microprocessor and Caches, Main ICs and Buses, PowerPC G4 Microprocessor

17-INCH specifications

The Apple 17-inch model has garnered attention for its impressive balance of performance and portability, making it a popular choice among professionals and creative users alike. Boasting a sleek design, it combines cutting-edge technologies with user-friendly features that enhance productivity and entertainment experiences.

At the heart of the 17-inch display is Apple's Retina technology, which provides stunning visual clarity and vibrant colors. With a resolution that surpasses traditional screens, users can expect crisp text and detailed images, making it an ideal choice for graphic designers, video editors, and anyone who values high-quality visuals. The large screen size creates an immersive experience, especially useful for multitasking, viewing spreadsheets side by side, or editing documents side by side.

Powered by Appleā€™s latest custom silicon, the 17-inch model delivers remarkable performance. The optimizations in the chip architecture enhance not only processing speeds but also energy efficiency, allowing users to accomplish more without compromising battery life. These advancements in chip technology together with integrated graphics offer smooth performance during intensive tasks such as rendering high-definition graphics or playing demanding games.

The laptop also comes equipped with a robust battery system designed to keep users productive for extended periods. Users can expect several hours of usage on a single charge, ensuring that they can work or enjoy media without the constant need to recharge. Furthermore, fast-charging capabilities minimize downtime, making it convenient for on-the-go professionals.

In terms of connectivity, the 17-inch model offers multiple Thunderbolt and USB-C ports, allowing for quick data transfer and connecting a variety of external devices. This versatility is essential for professionals who may need to hook up to external monitors or utilize peripherals for enhanced functionality.

The built-in audio system features high-fidelity speakers, delivering an outstanding audio experience for music, movies, and video conferencing. The integration of advanced microphones further enhances clarity during calls, making communication seamless.

Overall, the Apple 17-inch laptop stands out as a powerful tool designed for those who demand performance, quality, and flexibility in their devices. With its blend of stunning visuals, powerful processing capabilities, and user-centric features, it remains a strong contender in the market for those seeking a reliable and stylish computing solution.