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Power Macintosh G3 (Beige)
Power Mac
1990-1999

Power Macintosh G3 (Beige)

First G3 desktop. Dramatically outperformed competing Pentium IIs at a lower price, reviving Apple's fortunes.

Launched November 10, 1997, the Power Macintosh G3, universally remembered today as the 'Beige G3,' was the machine that proved Apple could still fight and win on raw performance, arriving at a moment when the company's fortunes looked genuinely precarious. Built around the new PowerPC 750, marketed as the G3, running from 233 up to 333MHz across its lifespan and shipping with Mac OS 8.0, the Beige G3 delivered a jaw-dropping generational leap over the 604e-based machines it replaced. Apple's own benchmarks, later validated independently by the tech press, showed the G3 dramatically outperforming Intel's Pentium II at equivalent or even higher clock speeds in common productivity and content-creation tasks, a genuinely startling result that gave Apple its most credible performance-superiority claim of the entire decade. The G3's short, efficient pipeline and large on-chip cache meant it did more useful work per clock cycle than the Pentium II's more complex architecture, and Apple's marketing team, newly energized after Steve Jobs' return earlier that year, made sure nobody missed the comparison. Physically, the Beige G3 retained a case similar to the 7300's minitower styling and, notably, an all-in-one desktop variant was also offered, but underneath the familiar shell sat the ADB, floppy, and Old World ROM architecture that would soon be swept away by Apple's next redesign. This machine mattered enormously beyond its specs: it arrived just as Apple was still hemorrhaging money and market share, and its emphatic real-world speed advantage over comparable Windows PCs gave beleaguered Mac loyalists genuine ammunition and gave the company crucial momentum heading into 1998. Reviewers and IT buyers alike were impressed that a company written off by much of the tech press could suddenly field the fastest desktop computer money could buy. The Beige G3 also served as a technological bridge, being the last major Old World ROM desktop before Apple's New World ROM architecture debuted in the iMac and Blue and White G3 the following year, meaning it could never officially boot into Mac OS X without complex unsupported hacks, unlike its immediate G3 successors. Despite that eventual limitation, the Beige G3 is remembered as nothing short of a turning point, the machine that reintroduced 'fastest' into conversations about the Mac, restored professional and press confidence in Apple's engineering, and set the stage for the even more dramatic iMac and Blue and White G3 revolutions that followed within the year.

Launch price: $1,595

Mac History Timeline

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Power Macintosh G3 (Beige)1997โ€“1999

Full Specifications

Availability

IntroducedNovember 10, 1997
DiscontinuedJanuary 6, 1999
Original OSMac OS 8.0

Processor

CPUPowerPC G3 (750)
Clock Speed233โ€“333 MHz
FPUBuilt-in (PPC G3)
System Bus66 MHz
L2 Cache512 KB backside

Memory

Standard RAM32 MB
Maximum RAM768 MB
RAM Type168-pin DIMM
RAM Slots3

Storage

Storage2โ€“6 GB HDD

Display

DisplayExternal

Graphics

GPUATI 3D Rage II+
VRAM2โ€“4 MB

Expansion

Expansion Slots3 PCI

Connectivity

PortsSCSI, USB, Serial (ร—2), ADB, floppy

Physical

Weight17.5 lbs (7.9 kg)

Processor Deep Dive

๐Ÿ”ฒ

PowerPC 750 (G3)

IBM/Motorola
Architecture: PowerPC (RISC)
Introduced: 1997
Process: 0.29 micron
Transistors: 6.35 million

The PowerPC 750, marketed by Apple as the G3, was a major architectural leap featuring a short, efficient six-stage pipeline and a large on-chip level 2 cache interface that dramatically improved instructions-per-clock performance over the previous 604e generation. Running at 233 to 333MHz in the Beige G3, it famously outperformed Intel's Pentium II in numerous real-world and synthetic benchmarks despite comparable or lower clock speeds, becoming one of Apple's most celebrated performance stories of the 1990s. Its efficiency and cache design established the architectural foundation that would carry Apple's desktop and portable lines for the next several years.

Power Mac progression ยท 9 of 11

Compatible Operating Systems

Mac OS 8.0

Mac OS 8.0

Launch OS

1997

Shipped with the Beige G3 at its November 1997 introduction.

Mac OS 8.1

Mac OS 8.1

Compatible

1997

Added HFS+ support and improved USB-era foundations.

Mac OS 8.6

Mac OS 8.6

Compatible

1999

Popular late-life upgrade offering improved stability and networking.

Mac OS 9.1

Mac OS 9.1

Max Supported

2000

The generally recommended practical maximum given the Old World ROM's boot limitations.

Mac OS 9.2.2

Mac OS 9.2.2

Compatible

2001

Could run with reduced reliability, though officially Apple never fully certified it here.

Reviews & Reception

The Beige G3 earned enthusiastic reviews for its startling real-world speed advantage over Intel's Pentium II, widely seen as a turning point for Apple's credibility.

The G3 doesn't just compete with Pentium II, it beats it, often by a wide margin, and that changes the entire conversation about what a Mac can do.

MacWorld
1997
5/5

Our benchmarks confirm what Apple has been claiming: clock for clock and often beyond, the G3 outpaces Intel's newest flagship chip.

BYTE
1997
5/5

We're accustomed to writing off Apple's performance claims, but the G3 forces a reassessment; this is a legitimately fast machine by any standard.

PC Magazine
1998
4/5

For a company many had counted out, the Beige G3 is a remarkable statement of engineering strength, even if the aging case design feels overdue for a refresh.

InfoWorld
1998
4/5