How do you upgrade the RAM in the Power Mac G4 Cube? How much RAM of what type does the Power Mac G4 Cube support?

The Power Macintosh G4 Cube models -- the Power Mac G4/450 Cube and G4/500 Cube -- have three memory slots and support up to 1.5 GB of memory running either MacOS 9 or MacOS X (MacOS 9 is limited to 1 GB of memory allocated to any single application).

Officially, the Power Mac G4 Cube uses 100 MHz PC100 SDRAM (3.3v, unbuffered, 64-bit-wide, 168-pin) modules, but PC133 is backwards compatible with the earlier PC100 standard and may be easier to find.

Please note that just because RAM meets the minimum listed criteria does not mean that it will necessarily function as intended in a particular Mac. When buying memory, be sure to buy from a quality vendor that has tested their RAM with your Mac to ensure compatibility.

Memory installation is straightforward and Apple provides both text and video instructions. Site sponsor Other World Computing provides a helpful video as well:

Along with useful instructional videos, as you would expect, OWC sells memory -- in addition to processors, hard drives, and other upgrades -- that are guaranteed to be compatible with the Power Mac G4 Cube as well as all other Macs.