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The PowerBook G4 was a series of notebook computers manufactured by Apple Computer. It is powered by the PowerPC G4 processor (hence the use of the “G4” moniker), initially produced by Motorola and later by Freescale, a Motorola spin-off. more...

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The PowerBook G4 had two different designs: one enclosed in a titanium body with a black keyboard and a 15” screen; and another in an aluminum body with an aluminum-colored keyboard, in 12”, 15” and 17” sizes.

Between 2001-2003, Apple produced the Titanium PowerBook G4, and between 2003-2006 the Aluminum models were produced. Both models were hailed for their modern design, long battery life and long processing power. When the Aluminum PowerBook G4s were first released, however, only 12” and 17” inch models were available, so the Titanium PowerBook G4 remained available until the 15” PowerBook G4 was released in September of 2003.

The PowerBook G4 line was the last generation of the PowerBook, and was phased out in favor of various Intel-powered MacBook and MacBook Pro models in the first half of 2006.

Titanium PowerBook G4

The first generation of PowerBook G4s were announced at Steve Jobs' keynote at MacWorld Expo in January 2001. They featured a PowerPC G4 processor running at either 400 or 500 MHz. They were just 1 inch (25 mm) thick, 0.7 inches (18 mm) thinner than their predecessor, the PowerBook G3. The PowerBook G4 Titanium also featured a front-mounted slot-loading optical drive into which optical discs (initially DVDs or CDs) could be inserted. The nickname “TiBook” was given to the notebook, derived from the chemical symbol of the element titanium, Ti, which the computer's case is made from, and the brand name iBook, Apple's other product line of laptop computers.

Expansion/Ports

The first generations of the Titanium PowerBook G4 featured 2 built-in USB ports, one FireWire 400 port, a 1/8" audio output, a 56k modem, 10/100 Base-T Ethernet, a PC card slot, a slot-loading CD/DVD drive, optional AirPort (Apple's name for 802.11 b/g networking), a VGA output, for operating a second display, and a built-in microphone. Later models featured similar I/O but the Ethernet was upgraded to Gigabit Ethernet (10/100/1000 Base-T), AirPort became standard (on high-end configurations), the CD/DVD drive was upgraded to a CD/DVD burner (on high-end configurations), and a 1/8" audio input was added. Also, the older VGA port was replaced with DVI output.

Revisions

There were three updates of the TiBook specification, featuring CPU speed increases, more powerful graphics chipsets, and other upgrades such as Gigabit Ethernet, DVI, and an optional SuperDrive DVD burner. The four releases are referred to by Apple as follows:

Titanium, January 2001

This was the original iteration, featuring a 400 or 500 MHz PowerPC 7410 processor. It featured a 100 MHz FSB, 2 RAM slots (that took up to 512 MB modules, allowing for a maximum of 1 GiB), and an ATI RAGE 128 Mobility graphics card (with 8 MB of VRAM; running at 2x AGP). Discontinued in October of 2001.

Gigabit Ethernet, October 2001

Now with a 500 or 667 MHz PowerPC 7450 processor. The 667 MHz model featured a 133 MHz FSB, and both models had the same ATI Rage graphics, but now running at 4x AGP, and with 16 MB of VRAM. Both models, of course, also now included Gigabit Ethernet (10/100/1000 Base-T). Discontinued in April of 2002.

DVI, April 2002

Sporting a new DVI output, this PowerBook revision featured a 667 or 800 MHz PowerPC 7455 processor, with both models running a 133 MHz FSB. They also featured an improved ATI Radeon 7500 Mobility graphics chip-set, running at 4x AGP, with 32 MB of VRAM. Discontinued in November of 2002.

1 GHz/867 MHz, November 2002

The only iteration to not receive a new incarnation of the PowerPC G4, it sported a minor speed bump to 867 MHz at the low end, and 1 GHz at the high end. It also featured an ATI Radeon 9000 Mobility running at 4x AGP, which shipped with 32 MB of VRAM, but could be upgraded to 64 MB as a built-to-order option.

Following the release of the 12” and 17” Aluminum PowerBook G4s, the Titanium PowerBook G4 remained available until September of 2003, about nine months, where it was eventually succeeded by the 15” Aluminum PowerBook G4.