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Sonnet Encore ZIF G4 CPU Upgrade - G3 B&W jumper setting

macintosh2002

Well-known member
Hello, could someone let me know how to set the jumper for a Sonnet Encore ZIF G4 1Ghz CPU in a G3 B&W? I pulled the jumper and these little metal brackets fall out of the jumper block. Unfortunately there is no reference in the Sonnet documentation, it is only mentioned that a jumper is included.
Thank you, Patrick
 

Byrd

Well-known member
You don’t set any jumpers - keep what’s in place on the B&W G3 motherboard and the Sonnet G4 will work out of the box. You will need to install a patched G4 aware firmware to the Mac before plugging in the G4 CPU, however
 

Bolle

Well-known member
The B/W G3 does indeed need a different jumper block for the 1GHz upgrade to clock the bus down to 66MHz.
It will only work with the stock jumper block in the Beige G3.
The slower (up to 500MHz) Sonnet G4 upgrades didn’t need jumpers on either the Beige and B/W.
 

macintosh2002

Well-known member
Thank you for your reply. Which setting has the different jumper block for the G4 1GHz model to use it in a B&W or Yikes? The Sonnet instructions are not helpful in this point...
 

macintosh2002

Well-known member
But in that manual they also mention a replacement jumper block. I made a request, hope that Sonnet will reply.
 

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jeremywork

Well-known member
I think that warning refers to the plastic block as the jumper block, and the internal metal contacts as the jumpers. It warns that should it become separated it should be put back together (but not reinstalled on the motherboard.)
 

macuserman

Well-known member
I had this same problem it took me awhile to figure it out but I have the correct information saved.
I believe this is what you want.
 

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macuserman

Well-known member
I had this same problem it took me awhile to figure it out but I have the correct information saved at home. If you don't get an answer
I had this same problem it took me awhile to figure it out but I have the correct information saved.
I believe this is what you want.
At least that's the picture I have saved on my phone labeled correct jumper settings if that isn't right let me know and I'll check my computer at home which currently has the jumpers set correctly. I saved this because as you found the actual correct jumper setting is hard to find as they just intended you to use the included jumper block.
 

macintosh2002

Well-known member
I got an answer from Sonnet, but they makes it very easy for itself - they refer to the support page with the reference material 😒

@macuserman That´s nice, could you please also check your computer at home please to be sure? Your picture shows the following setting for the Sonnet ZIF G4 with 1000MHz CPU: 00010110100
 

macuserman

Well-known member
I got an answer from Sonnet, but they makes it very easy for itself - they refer to the support page with the reference material 😒

@macuserman That´s nice, could you please also check your computer at home please to be sure? Your picture shows the following setting for the Sonnet ZIF G4 with 1000MHz CPU: 00010110100
Yes I can do that, might take me a minute to get to it, but if your patient I can for sure. In the meantime as far as I'm aware there isn't really any risk in just trying it, goodness knows I've set the wrong jumper settings I don't even know how many times or forgotten to even put the block back all together and sat there scratching my head about why it wouldn't work like an idiot. If it was me I'd give those settings I have there a try, I bet you'll have success.
 

macuserman

Well-known member
Yes I can do that, might take me a minute to get to it, but if your patient I can for sure. In the meantime as far as I'm aware there isn't really any risk in just trying it, goodness knows I've set the wrong jumper settings I don't even know how many times or forgotten to even put the block back all together and sat there scratching my head about why it wouldn't work like an idiot. If it was me I'd give those settings I have there a try, I bet you'll have success
Also one more note about this just so it's recorded in some form online, I purchased a 1.1Ghz Powerlogix G3 which is quite rare and I had a very difficult time finding any sort of documentation on which jumper settings to use with it and ultimately I just ended up trying the same jumper settings as the block that comes from Sonnet with the 1Ghz G4 processor and it works great. I am using that now in fact. Not that it's likely someone else will run into that as I'm the only one I know with one of those currently, but still I just wanted to throw it out there in case someone ever needs that bit of info.
 

herd

Well-known member
Nice find on that powerlogix CPU. I think there are some people here who would be interested in details on it, to try and make more of them:

68kmla.org/bb/index.php?threads/ppc750gx-vs-ppc750gl.39043/
 

macuserman

Well-known member
Nice find on that powerlogix CPU. I think there are some people here who would be interested in details on it, to try and make more of them:

68kmla.org/bb/index.php?threads/ppc750gx-vs-ppc750gl.39043/
I may have joined every mac forum and searched for mentions of that particular processor and messaged every single person who ever said they had one via the various forums and asked if they still had it and would be willing to sell it. Only one person even responded not surprising since all the posts were super old years back in fact. I bought the one from the only person who actually got back to me. There was a guy on FB who had an 800mhz one that was badly damaged CPU burn marks and wanted crazy money for it even though it was non functional. I passed on that plus it wasn't what I really wanted. Thanks for that thread link I think I'll join that convo I would love to see more of these.
 
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