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Apple 17-INCH manual Power Saving Features, Reduced Processor Performance, Operating Modes

Models: 17-INCH

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CHAPTER 1

Overview of PowerBook G4 17-inch

Asset management software that reports the kind of computer it is running on can obtain the value of the model property from the IOService plane of the IORegistry. For the PowerBook G4 17-inch computer, the value of the model property is PowerBook5,1.

Power Saving Features

The PowerBook G4 17-inch computer has several profiles to save power. These profiles are labeled on the Energy Saver panel of System Preferences.

Reduced Processor Performance

The PowerBook G4 17-inch computer reduces both processor speed and voltage to save power. Reduced processor speed allows the software to change the processor’s clock speed, slowing down to conserve power or speeding up when more speed is needed. The slower clock speed is 667 MHz and the L3 cache is turned off.

The user interface for the reduced processor speed is located in the options tab under the Energy Saver panel in System Preferences.

Operating Modes

The power management protocols on the PowerBook G4 17-inch computer support two power-saving modes: idle and sleep.

●Idle: The system is idling with the main processor stopped in a halted, low-power state. All clocks are running; the system can return to running code within a few nanoseconds. Cache coherency is maintained in this state.

●Sleep: The system is completely shut down, with only the DRAM state preserved for quick recovery. All processors are powered off with their state preserved in DRAM. All clocks in the system are suspended except for the 32.768 kHz timebase crystal on the PMU99 IC.

The computer automatically enters idle mode after several seconds of inactivity. If the computer is attached to a network, it is able to respond to service requests and other events directed to the computer while it is in idle mode.

While it is connected to an AC power supply, the computer can also respond to network activity when it is in sleep mode. The user can enable this feature by selecting Wake-on-LAN in the Energy Saver panel of System Preferences.

When operating on the battery in sleep mode, the computer consumes less than 1 watt of power, meeting the Energy Star power-saving standard. When operating on the power adapter in sleep mode, the combined computer and adapter consume 3 to 4 watts of power.

Important: Peripherals such as PCMCIA cards and USB devices that do not conform to the computer’s power management protocols prevent the computer from switching to sleep mode and so deny the user the benefits of this energy-saving mode. When such peripherals are attached to the computer, the operating system displays a dialog to inform the user that the computer no longer meets the Energy Star requirements.

System Software

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

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Apple 17-INCH manual Power Saving Features, Reduced Processor Performance, Operating Modes
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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 Apple’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.