hoi polloi
Active member
I've wanted to try this for quite a while now as it combines a few of my interests: the Cube, dual G4 computers, and hardware mods. So the dual 450/500MHz CPU cards from the apple towers will fit in a cube, but it's pretty rare to see these go past 550MHz or so when overclocking. Also, they use the 7400 chip so they take some power and start to stress the power supply components. The dual 533MHz CPU is a later version that uses 7410 chips. These are nice because they can often go to 600 or 650MHz and they use less power. However, apple flipped things around so they don't fit a Cube anymore. The single CPU cards are almost the same and make a nice drop in upgrade for cubes, but the duals are almost a mirror of the earlier cards:
So since I had both cards, I pulled all 4 chips and put the 7410 chips on the board that fits a cube, adjusted voltages and pll settings:
I installed it in a cube and it works well:
I recorded some overall power numbers along the way:
500MHz 7410 idle 28.8w max CPU 38.4w
dual 450MHz 7400 idle 40.8w max CPU 62.4w
dual 600MHz 7410 idle 38.4w max CPU 55.2w
So since I had both cards, I pulled all 4 chips and put the 7410 chips on the board that fits a cube, adjusted voltages and pll settings:
I installed it in a cube and it works well:
I recorded some overall power numbers along the way:
500MHz 7410 idle 28.8w max CPU 38.4w
dual 450MHz 7400 idle 40.8w max CPU 62.4w
dual 600MHz 7410 idle 38.4w max CPU 55.2w