G4 450 / G4 400 CPU swap ?

If the ADC is what you need, wouldn't it be easier to swap video cards? Just a thought.

We would need more information about which model you have, since there were two models that had those speeds, which don't have swappable processors. Check the audio in/out ports on the back- if they have the same alignment(both verticle or both horizontal), they would be compatible. If the alignment is different (one vertical, one horizontal), not compatible.

Machine types:

http://docs.info.apple.com/article.html?artnum=58418

Your 450Mhz computer is a "Sawtooth". So, yeah, swapping video cards wouldn't do you any good.

(And I don't know *where* you might of seen ADC ports that wern't on the video card. Anyway.)

I *believe*, but don't quote me on this, that the CPU modules are electrically compatable between Sawtooth and GigE. However there may mechanical issues with component placement and the heat sinks.

Frankly, I wouldn't bother swapping even if it would fit. You'll never notice 50Mhz. (In normal use I can't tell the difference between 667Mhz and 1Ghz Titanium Powerbooks, tell the truth.) It's not worth risking the damage to the CPU in my opinion.

--Peace

Ok, I must retract something- swapping video cards will not work, as your current model (sometimes referred to as a "sawtooth" model) will not support an ADC port, so putting an ADC video card in it wouldn't work. I'm surprised no one else here caught me on that!
The gigabit ethernet model does support ADC. You should be able to swap processors, and sell the sawtooth to recoup your expenses.
In my opinion, seems like a lot of trouble just for a monitor, though.

edit: Eudi beat my post by a few seconds- what he said. I don't *think* there would be any issues swapping processors, but like he said, I'm not sure it's worth it.

edit: Eudi beat my post by a few seconds- what he said. I don't *think* there would be any issues swapping processors, but like he said, I'm not sure it's worth it.

Score! ;^>

Anyway. The other thing I will mention is, well... you might want to reconsider how attached you are to that 17" CRT. They are "orphans" in every meaning of the word (being the *only* non-digital non-LCD ADC monitor Apple ever made), and no matter how nice they might be spending any money just to use one is a really questionable investment.

(A hypothetical "what if?": What if you find that the ADC video card in your new GigE is an anemic Rage 128? Replacement AGP video cards with ADC ports are often more expensive and are definately harder to find then ones without.)

You might want to read this thread, regarding the agony several people have gone through trying to get those monitors to work with ADC adapters.

http://www.applefritter.com/node/view/4008

You can get a *really* nice (20") CRT monitor for around $200 these days. Something to keep in mind.

--Peace

The 450 from a Sawtooth AGP model G4 will plug right into a Gigabit G4 without any problems or PLL changes. Just swap them, and hit the cuda switch.

Sawtooth to Gigabit Ethernet differences are:

Ethernet controllers
Power Supplies
Power Supply Board connector
AGP Slot has provision for ADC complient video card

Those are the main differences that pop up off the top of my head. They are two entirerly different boards, not just slightly modded from one to the next.