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G4 Dual 1.25ghz card in Digital Audio??
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Junior Member
Join Date: Nov 2004
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Hello once again all knowing mac gurus.
Will an original apple G4 Dual 1.25ghz processor card board from a MDD system fit, mount and work correctly on a 533 dual Digital audio logic board? Can I purchase this item, install it and expect it to work without major headaches or other pains? Would I have to reset anything, change a jumper, etc? It visually looks like the mounting points are similar.
thanks one and all for advice.
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Last edited by spork; Oct 25, 2005 at 07:42 PM.
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Mini Intel Core Duo 1.66, 1.5ram, super, 17" CRT Cinema Display, Intuos 3 tablet
G4 PB 1ghz 15", 60gb, 256ram, super, Wifi
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Moderator Emeritus  Join Date: Sep 2001
Location: Arizona
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Negative. MDD CPUs will only work in MDDs.
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Last edited by Lateralus; Oct 25, 2005 at 08:17 PM.
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I like chicken
I like liver
Meow Mix, Meow Mix
Please de-liv-er
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Junior Member
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what is the story with the prologix and sonnet and other upgrade chips? they are physically the same, ie bolt down with three screws, but designed for a certain mother board?
thanks
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Mini Intel Core Duo 1.66, 1.5ram, super, 17" CRT Cinema Display, Intuos 3 tablet
G4 PB 1ghz 15", 60gb, 256ram, super, Wifi
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Senior User
Join Date: Feb 2001
Location: Orange County, California
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Originally Posted by spork
what is the story with the prologix and sonnet and other upgrade chips? they are physically the same, ie bolt down with three screws, but designed for a certain mother board?
thanks
The standoffs are different between AGP G4 thru QS2k2 machines and the MDD series. The pinouts may also be different between the two, and there may be different design considerations between the processor cards.
I don't know if it specifically contributes to the incompatibility, but the MDD processor cards communicate with a different controller that is connected to DDR RAM. If the protocols between the processor and the RAM and controller are different between generations, I'd suspect that that is why they won't work interchangeably, and why Apple physically changed them so as not to fit (and not cause damage to the parts when they are put together.)
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the bighead
- MacBook Pro 15" matte non-unibody 2.6 GHz, 4GB RAM, 120/SSD & 750GB/7200
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