G4 1Ghz DP (133 bus) xserve into 167 bus and underclocking

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#477158 - 09/29/09 12:01 PM G4 1Ghz DP (133 bus) xserve into 167 bus and underclocking [Re: Muterevevilia]
patrick Registered: 05/29/09 Posts: 8	I have a G4 1ghz Dp from an xserve which runs on the 133 bus. I'd like to put this in a 167bus logic board and downclock the cpu back to the original speed 1ghz. What effect will this have on the cpu and cache will there be any issues by keeping the same cpu speed and upping the bus?
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#477159 - 10/08/09 10:49 PM Re: G4 1Ghz DP (133 bus) xserve into 167 bus and underclocking [Re: Muterevevilia]
KnifeLord Registered: 11/15/07 Posts: 303	Check out the mod-guides section. A good example of an overclocking mod is- http://www.macmod.com/internal-mods/powermac/533-overclocking-blue-a-white-power-mac-g4400 This will help you a bit, there are a number of clock-editing guides. Hope that helps ya. -Knife
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#477160 - 10/16/09 03:58 AM Re: G4 1Ghz DP (133 bus) xserve into 167 bus and underclocking [Re: Muterevevilia]
TCPMeta MacModder Registered: 11/15/07 Posts: 1797 Loc: Florida, USA	It's kinda hard to underclock the FSB. I know with the G4 sawtooth you can solder on a dipswitch and change the motherboard's FSB some but as for the CPU it self it's a bit tricky, it will require some skillful soldering.
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#477161 - 10/16/09 01:17 PM Re: G4 1Ghz DP (133 bus) xserve into 167 bus and underclocking [Re: Muterevevilia]
Waragainstsleep Registered: 02/13/05 Posts: 1723	Its been a while, but I think the bus speed is set on the daughtercard, so the whole thing should automatically run on a 133 bus with 1GHz CPUs. http://www.xlr8yourmac.com/systems/g4_mirrored_drive_doors/G4_MDD_CPU_Module.html
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#487355 - 01/06/10 02:50 PM Re: G4 1Ghz DP (133 bus) xserve into 167 bus and underclocking [Re: Waragainstsleep]
daMachine n00b Registered: 01/06/10 Posts: 1	Just a bump for an update. I'm looking at getting a dual 1Ghz xserve, putting it in a 167Mhz mobo, but leaving the bus at 167. Any idea if this CPU can handle the overclock to 1.25Ghz (7.5 x 167)? Or will I probably need to drop the multiplier a bit from 7.5?
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