Power Mac G4 (PCI Graphics) upgrades

The first Power Mac G4 tower, using a PCI-only blue-and-white-style architecture with USB and FireWire.

Also called: Power Macintosh G4 PCI, Yikes G4

At a glance

Introduced: 1999

Products listed: 2

Exact-model evidence: 2

Family/interface evidence: 0

Upgrade types: 2

Vintage searches: 0

Upgrade directory: G4 PCI Graphics

Browse everything below, or filter by product type, availability, and compatibility basis. Notes explain whether evidence names an exact target, a broader family, or only the relevant bus or interface for this computer.

Showing 2 products.

StatusProductWhat it doesLinks
AvailableChecked Jul 24, 2026ATX2G3 Conversion Cableby Infinity Products
atxpower supplyreplacement part

Adapts a modern 24-pin ATX power supply to selected Power Macintosh G3 and PCI Graphics G4 towers.

For this system (exact model): The vendor states that the PCI Graphics G4 uses essentially the same power-cable design as the Blue and White G3. This relationship does not include later AGP Graphics G4 models.

The current product page listed the cable without an out-of-stock marker on 2026-07-24. No ATX power supply or other conversion hardware is included.

Sources
ATX2G3 Conversion Cable product page
AvailableChecked Jul 24, 2026Radeon 7000 PCI Mac ROM Conversionby ATI and Infinity Products
pcigraphics cardvideo outputfirmwaresoldering

Converts selected PC Radeon 7000 PCI graphics cards for classic Mac use with a Mac ROM v226 image.

For this system (exact model): The converted complete-card page explicitly includes the PCI Graphics G4. This does not establish compatibility with later AGP Graphics models.

The pre-flashed ROM chip and a limited set of converted used 64 MB cards were listed without an out-of-stock marker on 2026-07-24. The ROM-chip product does not include a graphics card.

Sources
Pre-flashed Radeon 7000 Mac ROMConverted used Radeon 7000 cards