[G4] "grackle"? grumble, grumble...

[James Asherman]

I suspect that this is not an issue.
  Note the variety of high speeds offered.
http://eshop.macsales.com/MyOWC/Upgrades.cfm?model=164&type=Processor&TI=4727&shoupgrds=Show+Upgrades
J
On Jan 17, 2008, at 7:24 PM, brad powell wrote:

>
> I have a Power Mac G4 ("Sawtooth"), w/400 Mhz CPU,1.25
> GB RAM and
> OS 10.4.11
>
>  Until this past week I didn't think I could
> significantly upgrade to a dual processor.  I just
> learned that my motherboard has Uni-North
> ASIC chipset/version 7.   So although I'm excited now
> about the low price of dual 533mhz cpu's on ebay,  I
> also read:
>
> "G4’s Motorola XPC106 “Grackle” PCI/Memory controller
>
> prevented the G4 from hitting speeds higher than 500
> MHz."
>
> Does this mean that I need to limit a processor
> upgrade to
>  dual 450,466 or 500mhz CPU?
>
>  Is there some workaround to the  "Grackle"
> controller,
> to fully utilize a dual 533 mhz cpu or faster?  All my
> googling brings me back to the same article in
> LowendMac.
>
> thanks
> brad
>
>
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