Hoping wrote on 2021-10-28, 14:53:
I don't think that any OEM will mod a BIOS of a card that they did not make or especially made for them.
That's why I asked to have photos at first. I don't know if Gigabyte had partnership with OEM, but if it was the case, it could had come with underclocked GPU and RAM. This is often the case to limit heat and reduce power consumption. Meaning a modified BIOS and an modified driver (with in most of the case the original manufacturer adding the card officially in there driver, but not always). But in case there is a driver available for the targeted OS, it is always possible to hack the BIOS (different frequencies) by editing it or it is also possible to just use a software solution as nVidia gave as an option for their ForceWare control panel.
Here it is the latest driver that does not have NV40 entries in its NVAGP.inf file so if you mean to change device ID in the BIOS, I don't see the point. The logical conclusion is that the latest available driver does not support such chipset. And that's why the card does not work. But the chipset is supported in Windows NT5.x as the same generation of the driver have entry for NV4x architecture. That is odd, but that is a fact.
Weegee wrote on 2021-10-28, 13:44:
Can you point me to a card that woyld work in this scenario? I'm assuming some FX series or 6200 or something along those lines.
If it had to be a nVidia PCI-E, maybe a GeForce FX 5750 as it work great with almost all DirectX 9.0a games. But the driver support have to be tested to be sure, it is a NV39 and there can be surprise. GeForce FX cards were not really appreciated back then, but they are not bad actually. It is just ATI fill the gap and the processing power compared to GeForce 4 was not very important, but that's only by comparing DirectX 7/8 games on both GPU, not DirectX 9 ones. But there is surely many other choices like ATI R300. I have not enough knowledge and experience for such a case, so maybe some other users will help you better on what to chose 😀
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