Editing Power Mac G4 (section)

==Overview==
[[File:Apple PowerMac G4 M8570 MDD sideopen.jpg|thumb|A Power Mac G4 with the case opened]]
The Power Mac G4 is a line of [[personal computer]]s. The [[Computer tower|tower form factor]] case is adapted from that of the [[Power Macintosh G3#Blue and White|Power Macintosh G3 (Blue and White)]], and features a latch on the side which can be used to open the side of the machine for easy access to the internals.{{sfn|Gore|1999|pp=88–89}}

The machine is designed around [[PowerPC G4]] processors, which feature faster processor speeds, larger caches and cache speed boosts from their G3 predecessors. The Power Mac G4 used chips that included a subprocessor called the [[AltiVec|Velocity Engine]] that performs functions such as video decoding that would otherwise be formed by slower, separate chips. Software must be written to specifically address the Velocity Engine.{{sfn|Gore|1999|p=91}}

External connectivity is provided by [[Universal Serial Bus]] and [[FireWire]] ports. Early models have options for adding [[AirPort]] wireless networking via an expansion card; this later came standard.