The fifth generation (Get it? Generation 5?) of the PowerPC Archecture that was pioneered by Apple, Motorola, and IBM. Also known as the PPC (PowerPC) 970. IBM alone makes this chip which borrows somewhat from Motorola's G4 and IBM's own Power4. Said to be the first 64 bit processor for personal computers and has a 2:1 processor frequency/front side bus ratio. For instance, a 2.0 GHz G5 has a FSB of 1.0 GHz. It is currently used in IBM's own BladeCenter servers and Apple's PowerMac, Xserve, and is rumored to debut in the iMac soon. While Apple has yet to ship a true 64 bit OS, Mac OS 10.2.7 and up uses 64 bit extensions which allows it to break the 4 GB barrier of 32 bit chips and address a full 8 GB memory. Due to excessive heat, the 2.5 GHz G5 had to be liquid cooled and a Powerbook version isn't expected soon. At its debut it used a 130 nanometer process but the 2.5 GHz model and the Xserve models use a smaller 90 nm process. A couple Supercomputer clusters have been built utilizing the G5, including Virginia Tech University, COSLA (a US Army contractor), and now UCLA.
Dude, that G5 owns your Pentium!
The G5 is the fifth generation of the PowerPC line.
by W33D4Sale July 05, 2004
She a plane, planes fly all around. Nigga terms. She a hoe.
Guy 1: Bitch a hoe.

Guy 2: Ye she a G5.
by smallzzzzzzzz April 18, 2011
A group of people with the common interest of smoking marijuana in public places... car parks, streets etc. Originated in the North East of England (2010.)
Look at those G5'ers they've smoked so much I think the blonde girl is going to collapse!
by G5err December 05, 2010
An adjective derived from the G5 by Mac, the world's fastest word processor. It has now expanded as an umbrella term used as an adjective synonymous with "super fast". It has also been used as a noun for anything fast.
Used as an adjective in Mariah Carey's song "Clown" off her 2002 "Charmbracelet" almbum: "My g-5 20 minutes wasn't nothin'".

Used as a noun in Jesse McCartney's new 2008 single "Leavin'": "Girl we flying on a g-5, g-5".
by Andrew Kennedy Garber May 09, 2008
IS the official date rape drug of jesse mccartney. In his song leavin he claims he is "flying on g-5" and a scared girl thinks she's gonna be raped. The room turns white when it is taken.
Leavin- Jesse Mccartney flyin on G-5
by Jesse Mccartney buttsects August 08, 2008
An Exceedingly hot computer processor. So inefficient that Apple couldn't use it in its laptops. The biggest reason for the PPC to Intel transition.
G5 User: Dude, my iMac has a G5, it's 64-bit!
Me (Aka G3 User): Wow, my iBook is a G3 and it runs better and with less power than yours!
G5 User: Wow, it's hard to believe that Mac users can hate each other!
by Fizzler December 20, 2006
G5 Howitzer

The G5 Howitzer is a South African towed indirect artillery battery. It was introduced in 1981. It has an engine, which allows it to go about 16km/h for short distances. The engine also controls trails and firing platform. There is no power traverse or elevation. The G5 can be fired in most terrains, including soft or sandy.

Type: semi-mobile indirect artillery
Dimensions: length 11m; width 8.7m; height 2.3m
Diameter: 155mm
Caliber: 45
Tow Speed: on-road 90km/h; off-road 50km/h; cross-country 15km/h
Self-Propelled Speed: on-road 16km/h; off-road INA; cross-country 3km/h
Direct Range: 3km
Indirect Range: 40km
Rate of Fire: 2 rpm
The G5 fired a long range round at the advancing Cuban forces.
by Rot April 07, 2005

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