I've been tinkering with a BGA-swapped CPU card and I've had difficulty getting it to run at speed because of the L3 cache ratio. The original 733MHz CPU works with a 4:1 ratio, but the 1400MHz chip needs 6:1. Does anyone know how to set the L3CR register at or before boot time? I suspect...
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...