Issue with Gigadesigns Dual 1.6GHz

indibil

New Tinkerer
Aug 6, 2025
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rosysumenteinquieta.blogspot.com
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.

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