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iMac G4 (Lamp)
iMac
2000-2005

iMac G4 (Lamp)

Iconic 'Lamp' design with flat panel LCD on an articulated arm. A design masterpiece by Jonathan Ive.

A hemispherical dome with a flat LCD panel mounted on a chrome arm, shown in January 2002 and resembling nothing else anybody sold. Everyone called it the lamp, or the sunflower, and the Luxo Jr. comparison was obvious enough that Apple never had to make it. Jony Ive's team designed it after the Cube failed, which gives you some idea of the confidence in the building at the time. The arm was not decoration. It tilted, swiveled and pivoted well enough that you could set screen height and angle properly, which no other flat panel of the period allowed, and Apple's advertising leaned on it heavily. Inside was a G4 from 700MHz at launch to 1.25GHz later. Pentium 4 desktops posted bigger clock numbers and came in beige boxes with a separate monitor and a tangle of cables. Mac OS X 10.1.2 shipped on it, at exactly the moment Apple needed people to leave Mac OS 9 behind, and a friendly machine made an unfamiliar operating system easier to accept. Nothing has used the dome and arm since. The idea underneath, that a computer can be a sculpture you keep on a desk, went into the iMac G5 and everything after it.

Launch price: $1,299

Mac History Timeline

1984-1989
1990-1999
2000-2005
2006-2012
2013-2019
2020-present
1984199019952000200520102015202020252026
iMac G4 (Lamp)2002–2004

Full Specifications

Availability

IntroducedJanuary 7, 2002
DiscontinuedAugust 31, 2004
Original OSMac OS X 10.1.2

Processor

CPUPowerPC G4 (7441/7445)
Clock Speed700 MHz – 1.25 GHz
FPUBuilt-in (AltiVec)
System Bus133 MHz
L2 Cache256 KB

Memory

Standard RAM256 MB
Maximum RAM2 GB
RAM TypePC133 SDRAM SO-DIMM
RAM Slots2

Storage

Storage40–80 GB HDD
Optical DriveDVD-R/CD-RW

Display

Display15 or 17-inch flat LCD

Graphics

GPUNVIDIA GeForce2 MX / GeForce4 MX
VRAM32–64 MB

Expansion

Expansion SlotsNone

Connectivity

PortsUSB (×3), FireWire 400, Ethernet, audio, modem
Wi-FiAirPort (802.11b)

Physical

Weight24.9 lbs (11.3 kg)
Dimensions15 × 10.6 × 17.3 in

Processor Deep Dive

🔲

PowerPC 7441/7445 (G4)

Motorola/Freescale
Architecture: PowerPC (32-bit)
Introduced: 2002
Process: 180nm/130nm
Transistors: ~33 million

The 7441 and later 7445 G4 chips powered the iMac G4 at clock speeds from 700MHz up to 1.25GHz across its production run, carrying the AltiVec Velocity Engine for accelerated multimedia tasks like iMovie editing and iTunes encoding. These chips balanced power efficiency against the compact dome enclosure's limited cooling, making them well suited to a fanless-adjacent, consumer-friendly design. Against contemporary Pentium 4 desktops running at much higher clock speeds, the G4 traded raw throughput for efficient vector processing and lower heat output. The chip family reflected Motorola's, and later Freescale's post-spinoff, continued refinement of the G4 core for mainstream consumer machines.

iMac progression · 4 of 14

Compatible Operating Systems

Mac OS X 10.1.2

Mac OS X 10.1.2

Launch OS

2002

Shipped as the factory operating system on the first iMac G4 models.

Mac OS X 10.2 Jaguar

Mac OS X 10.2 Jaguar

Compatible

2002

Widely adopted update that improved performance and added Quartz Extreme graphics acceleration.

Mac OS X 10.3 Panther

Mac OS X 10.3 Panther

Compatible

2003

Ran well on the higher-clocked 800MHz-1.25GHz iMac G4 revisions.

Mac OS X 10.4 Tiger

Mac OS X 10.4 Tiger

Compatible

2005

Supported on faster iMac G4 configurations with adequate RAM.

Mac OS X 10.5 Leopard

Mac OS X 10.5 Leopard

Max Supported

2007

Only iMac G4 models at 867MHz or faster meet Leopard's minimum processor requirement.

Reviews & Reception

Near-universal critical acclaim for its groundbreaking dome-and-arm design, widely regarded as one of Apple's finest industrial design achievements.

Apple has once again reinvented what a personal computer can look like. The articulated arm is not just beautiful, it is genuinely useful.

MacWorld
2002
5/5

Part desk lamp, part sculpture, entirely brilliant. This is industrial design at its most confident.

Wired
2002
5/5

Performance is solid for everyday tasks, though Pentium 4 machines remain faster on paper. Nobody buys this iMac for benchmarks, though.

CNET
2002
4/5

Even confirmed Windows users will admit this is one of the most striking computers ever built.

PC Magazine
2002
5/5