Power Macintosh

Guide to CPU Upgrades for Power Mac G4

(100-133 MHz bus models)

Created 2002.06.12
no longer updated
see our Guide to Power Mac G4 Upgrades for Power Mac G4 with AGP graphics

 

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The Power Mac G4 has shipped in several different configurations. The "Yikes!" model has a 100 MHz bus and takes the same ZIF upgrades as the Power Mac G3. The "Sawtooth" models have a 100 MHz bus, the 2001 and most later models use a 133 MHz bus, and the current 1.0 and 1.25 GHz dual processors machines have a 167 MHz bus. This page covers upgrades for Power Macs with AGP video and a 100 or 133 MHz system bus.

Moving to a faster CPU is as easy as removing the current one and inserting a new one in the zero insertion force (ZIF) socket.

Benchmark scores are supplied by the manufacturer.

The information is as accurate as I can find, but specifications and availability are subject to change; I suggest you check with the manufacturer to verify current models. Prices keep dropping, so these prices may be outdated. (Prices are in $US.) In fact, models are added and discontinued so often, it's impossible to keep track of which models are current.

Discontinued accelerators will be retained for historical reasons. Accelerators may not work in all G4s with AGP, particularly the Cube. Be sure to check manufacturer's site for full compatiblity data.

Manufacturer CPU
Speed 		CPU, L2
Cache
Size 		L3
Cache
Size 		L3
Cache
Speed 		MacBench
5.0 rating* 		Est.
Street Price
Giga Designs
G-celerator
added 1/9/03 		800 MHz none $299
1 GHz none $489
1 GHz 2 MB $599
Other World Computing
 Mercury Extreme
added 5/23/03 		1.33 GHz 7455
256 KB 		2 MB 267 MHz $580
PowerLogix
PowerForce G4 Series 100
updated 1/10/03 		750 MHz 7455
256 KB 		disc.
800 MHz 2 MB $449
1 GHz 2 MB $699
1.2 GHz 2 MB $799
PowerLogix
PowerForce Dual G4 Series 100
added 1/10/03 		800 MHz 2 7455
256 KB 		2 MB $799
1 GHz 2 MB $1,199
1.2 GHz 2 MB $1,399
PowerLogix
PowerForce G4 Series 133
updated 1/10/03 		800 MHz 7455
256 KB 		$449
1 GHz $699
1.2 GHz $799
PowerLogix
PowerForce Dual G4 Series 133
added 1/10/03 		800 MHz 2 7455
256 KB 		2 MB $799
1 GHz 2 MB $1,199
1.2 GHz 2 MB $1,399
Sonnet Tech
Encore/ST G4
updated 12/7/04 		800 MHz 256 KB 2 MB disc.
1 GHz 256 KB 2 MB $230
1.2 GHz 256 KB 2 MB $300
1.4 GHz 512 KB none $400
1.7 GHz 512 KB none $500
Sonnet Tech
Encore/ST G4 Duet
updated 12/7/04 		500 MHz 1 MB L2 500 MHz disc.
1.3 GHz 2 x 2 MB $700

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