Here guys... Check this out.
You know about Dual processing machines right? Of course you Do... Well, you can actually Dual processor a Cube too! Yes, It's been done many times before! But it can a be a major task specially if your gonna dual it with Dual 1Ghz G4 Processors.
Dual G4 450 Cube Modifications
This is the
link (from xlr8), to dual a Stock Cube with 450Mhz G4.
Sonnet did a modulate to upgrade other powermacs to full
Powerlogix/Sonnet Dual 1Ghz status.
Overheating!
Option A
But due to the tiny enclosure of the cube it proved to be very unstable causing many problems related to over heating and inadequate airflow. This problems can be solved though. Here's how!
" One thing that the dual g4 cube owner may want to consider is installing an 80mm fan in the bottom of the cube case (there are mounts and space for an 80mm IIRC). A 19.5 CFM @ 15 dBa 80mm is $20 from Plycon.com. Since the heatsink setup is optimized for passive cooling, I believe that forcing air over it should only improve it's cooling ability. (also the air coming out of the vent should keep papers from resting on it).
Just a possible future upgrade, to lengthen the life of a really awesome cube.
-Chris"
Option B
You need to manufacture, or create a custom heat-sink and include one of those babies:
Noiseless Super-coolers
On the power-board of the Cube there is already a 12 Volts power source, initially for a internal fan (if you look carefully, you can see mountings for this part) but Apple never installed it, maybe they wanted to create a acoustically sound system.
Newer 1.25Ghz Modules seems not to work, mainly due to speed different in the data bus... but one can try.
Have fun...
