----------  Original message  ----------
Subject: Re: Differences between single and dual G4 Quicksilvers
Date:    Sonntag 17 Oktober 2010N
From:    Powermac <[email protected]>
To:      "G-Group" <[email protected]>

> So what are my options on the slow single G4-800 on a QS2002?

As far as I know, every QS2002 processor card should work.

I personally would grab anything that is low priced and a Dual processor for 
133 MHz system buses. That is:

* Dual-533 MHz from Digital Audio
* Dual-800 MHz from Quicksilver
* Dual-1 GHz from Quicksilver 2002

You cannot use a processor from an MDD or FW800, they are incompatible.


You could use a Dual-450 or Dual-500 from a Gigabit Ethernet, but you'd have 
to move resistors, since these are for 100 MHz system buses.

Examples:

4.5 × 100 MHz = 450 MHz
3.5 × 133 MHz = 465 MHz

or

5.0 × 100 MHz = 500 MHz
4.0 × 133 MHz = 533 MHz


You can see why the Digital Audio has a Dual-533 MHz instead of a Dual-500 MHz 
processor – the 133 MHz system bus.


(Re)move the resistors like described in this link:
http://power-mac-g4.com/g4clockup.html

In the table “G4 JUMPER CHART”, set the Multiplicator CCU so that it gives the 
correct CPU speed for a 133 MHz bus.


A CPU upgrade card from OWC, Sonnect, Newer Technology, FastMac, Giga Designs 
or PowerLogix is also a good option, but I recommend at least a Single-1.2 GHz 
for decent performance. These cards are often quite expensive, even used ones.


Hope that helped,
Cheers,
Andreas  aka  Mac User #330250

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