Cursed Derp wrote on 2024-10-10, 12:30:
I do want period correctness tho
Okay, so if you want period correctness, the top of the line option at the time of a Dimension 4100 was a GeForce 2 GTS. Maybe a GeForce 2 Ultra but I am not sure Dell offered (and I presume with all of Internet Archive's recent issues, I can't check wayback machine) those. eBay is also full of Dell OE GF2 MX cards.
I really, really would urge you to stay away from ATI. In part because ATI had a different philosophy when it came to drivers in those days - they had separate drivers (with separate bugs) for each of their products. Nvidia had one driver family, which I think was called... Detonator... back then, so they would release updated drivers for the entire product lineup quite regularly. ATI would eventually embrace the Nvidia-style model with the Catalyst driver family on the later Radeons, but I don't think that applies to the cards you're looking at.