For the sake of stability I highly anti-recommend any Radeon HDwhatever unless you have a PCI express slot to back it up on such an old motherboard. and even then you're probably stuck to the HD4850 at best. There's also additional visual quirks when you have this wasted DX10+class hardware trying to do older APIs it wasn't designed for (no dithering is a big one, but there's also some new depth artifacts)
When you have "for 2005" in mind, the Radeon X###/X1### family will be fine.

long live PCem
FUCK "AI". It is a tool of fascism. We do not need it. We do not use it.