Interest in adapting 744x to 7400?

[herd]

I've been playing some more and I think the dual 7447 would be safe on the stock Cube VRM at 1GHz. At this setting it uses less peak power than a dual 500MHz 7400 from a Gigabit Ethernet tower, and these CPUs have long been a popular upgrade for the Cube (using the stock VRM).

The version of CHUD that I have won't enable NAP mode on dual CPUs for some reason, so in this situation the CPUs always need fan cooling. However, CPU Director will enable both NAP and DFS which cuts the idle power to almost nothing. With DFS enabled, even under full load the dual 1GHz 7447 (at 500MHz w/DFS) uses less power than the stock 450MHz CPU. I think I'll call the experiment complete.

 

[joevt]

The version of CHUD that I have won't enable NAP mode on dual CPUs for some reason, so in this situation the CPUs always need fan cooling. However, CPU Director will enable both NAP and DFS which cuts the idle power to almost nothing. With DFS enabled, even under full load the dual 1GHz 7447 (at 500MHz w/DFS) uses less power than the stock 450MHz CPU. I think I'll call the experiment complete.

What version of Mac OS X are you running? I think CPU Director doesn't work on anything later than Mac OS X 10.4.9 but at least CHUD can be used to verify the CPU settings.

 

[Quadraman]

Would this mod cause heat issues on the confines of a G4 Cube?

 

[Mikeyy00]

Hey Herd.. is that something I can pay you for (a 1ghz+ upgrade for the Cube?.. ) Currently waiting on my Artmix VRM to get fixed so I can use a Sonnet 1ghz without letting out the smoke.

I have a few spare stock 450 CPU cards that could be used as a donor card.. I could even send you the Sonnet to put towards payment or something.. ?

 

[Mikeyy00]

Hey Herd.. is that something I can pay you for (a 1ghz+ upgrade for the Cube?.. ) Currently waiting on my Artmix VRM to get fixed so I can use a Sonnet 1ghz without letting out the smoke.

I have a few spare stock 450 CPU cards that could be used as a donor card.. I could even send you the Sonnet to put towards payment or something.. ?

@herd