PowerBooks & iBooks

15″ PowerBook G4, 667 MHz (Gigabit Ethernet)

code name: Onyx, TiBook

Overview

Just nine months after releasing the first titanium PowerBook, Apple replaced it with two faster models - this is the faster one. Both models share the same logic board, but they run the bus and CPU at different speeds. The 667 MHz CPU in this model runs on a faster (133 MHz vs. 100 MHz) system bus than its 400-550 MHz siblings. Standard features include an AirPort card, a 30 GB hard drive, and ATI Mobility Radeon graphics with 16 MB of video memory. CD-RW is available as a build-to-order option for those willing to give up DVD.

Closed Lid Mode: TiBooks support "lid closed" (or clamshell) mode, which leaves the built-in display off and dedicates all video RAM to an external display. To used closed lid mode, your 'Book must be plugged into the AC adapter and connected to an external display and a USB mouse and keyboard (you might also want to consider external speakers). Power up your 'Book until the desktop appears on the external display and then close the lid. Your 'Book will go to sleep, but you can wake it by moving the mouse or using the keyboard. The built-in display will remain off, and the external monitor will become your only display. Since all video RAM is now dedicated to the external monitor, you may have more colors available at higher resolutions. The TiBook is designed to run safely in closed lid mode, but if yours runs hot (perhaps due to overclocking or high ambient temperatures), you may want to open the lid when in closed lid mode: The screen will remain off and the computer will more readily vent heat from the CPU.

To resume use of the internal display, you need to disconnect the external display, put the computer to sleep, and then open the lid. This will wake up your 'Book and restore use of the built-in display.

This TiBook was replaced by a faster, larger screen model on April 29, 2002.

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