• Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out this follow-up post about our outage a week or so ago.

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    How to set L3CR Cache for DIY G4 CPU Upgrade

    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...
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    Dual 600MHz Cube

    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...
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