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Issue with Gigadesigns Dual 1.6GHz

Posted by: indibil on 2026-09-23 04:57:56 Hi. A friend sold me a Gigadesigns Dual 1.6GHz MC7447A upgrade. I tested it myself in his Quicksilver 2002 and then removed it. Now I’ve tried installing it in my own QS 2002, but it doesn't recognize the CPU. I tested it in a DA model, and it works there. At first, I thought the applied patcher might be incompatible; I use the NewerTech Patcher (7447, 7448 & 7457) on almost all my G4s. I removed that patcher and applied the one I have for a Gigadesigns Single 1.6GHz, but that didn't work either. I tried it in another QS I own, and it didn't recognize it there either. Yet, it works fine in my friend's machine. Could it be that it requires a specific Gigadesigns patcher for Dual configurations? The QS units have something different in their firmware, as they are the only ones that allow a CPU with a damaged L3 cache to boot. Could it be that they fail to recognize the processor without the proper patch? Something similar happened to me when I performed a swap to a Gigadesigns 1.4GHz card and installed an MC7457. After the swap, it works in all G4s except the QS models. I haven't managed to get it working, and I thought the Newertech patcher was to blame. Maybe i need Giga Designs Updater 3.0.1 ?? Someone have it?

Posted by: splorp on 2026-09-30 11:25:54 Do you have the Gigameter extension installed in either of your QuickSilver boxes? The system won’t recognize the new CPU speeds without the extension. I ran into this same issue after transplanting a hard drive from another Mac into my own Quicksilver with the Giga Designs upgrade.

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