FX chips are silly expensive and have the timing bug (all A64X2s do). Multi-core also isn't that big of a deal for older games, so I'd go with a fast single core and eliminate cost and potential headaches. Even 6800U in SLI will be very cpu bounded on 939 - no point in 7900GTX or 7950GX2 SLI. Not saying don't do it, just that it will be very CPU bound. GF7 and whatnot better coincide with AM2 and Core 2-era hardware.

On the motherboard, I'd go Asus A8N over the DFI. It doesn't require jumpers or card flipping and will be potentially easier to find. Good performance too.

I'd also skip SP3 and all of the 2009+ updates and features. Throw SP2 on there and go. No point in attempting to "modernize" such a machine for the web imho.

Oh, and throw an Audigy or X-Fi in there. 😀

well id rather avoid buying an SP2 disk, I have about 10 copies of XP SP3 Home 🤣. Also I do install Steam onto my XP gaming boxes, alot of my games are on steam, I just prefer using the correct hardware to play them more 🤣.

Totally understandable. Something else to consider if you're starting from "nothing" - why not go AM2? CPUs will cost less and perform better, and you can get more use out of the 6800/7900 SLI configuration. Core 2 would also work, but IME SLI boards for Core 2 command a premium.

Another thing you might consider is going Radeon. For early DX9 the R300/400 is really king, and the R500 series has better HDR support than GF6/7.

because these specs where what i kept putting into my basket on newegg as a dream machine 🤣