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G4 processor swaps

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#21 Byrd

  • 68020
  • LocationMelbourne, Australia

Posted 08 June 2016 - 10:08 AM

The CPUs do look the same, but the Xserve dual CPU seems to have more components on it - I'd be a bit wary.  You could probably pick up a dead dual MDD for next to nothing anyhow to transplant the CPUs.  Keep in mind depending on the bus speed/model you may need to physically switch resistors on the card to get the right multiplier at the right bus speed.

:: Current project Mac: PB1400 resto

#22 waynestewart

  • 6502
  • LocationVancouver BC

Posted 09 June 2016 - 03:19 PM

I had too many G4 xserves so I swapped a dual 1.33 over to a MDD. Works fine, I've had zero problems with it

Computers I have at least 1 of: 128k, 512k, 512ke, Plus, SE, SE/30, Classic, Color Classic, Mac II, IIfx, LC, IIci, Quadras 700, 800, 840AV, 900, PM6100, 6150, 8100, 6500, 7300, 8500, 9150, 9500, 8600, 9600, Beige G3 DT, MT, Server & AIO, B&W G3, Tray loading iMac, Slot loading iMac, eMac, G4 DA, Quicksilver
Mac Portable, Powerbooks: 100,140,145,145B, 160,170,180,190, 520C, 5300,Wallstreet, MacBook Pro
Apple III, Apple II: II, II+, IIe, IIc, IIc+, IIgs

#23 brirec

  • 6502

Posted 12 June 2016 - 05:47 AM

Best IMO is a dual 1.42 from a fw800 model in a fw400 model. You have to either swap the heatsink too or modify the CPU (relocate an inductor… not terribly difficult but it requires soldering to the CPU board) because otherwise it won't fit, but Mac OS 9 at 1.42 GHz and an SSD is pretty insane.

Edited by brirec, 12 June 2016 - 05:47 AM.

#24 Knez

  • 6502
  • LocationSweden

Posted 10 November 2016 - 12:44 PM

I currently have a Dual 1.25ghz board overclocked to 1.5ghz. No problems with it since the overclock was made around 5 years ago.

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