Are there any?

I bought a new mobo late last year to go with an AMD 4000. I already had an
X800 Pro, AGP, so I didnt feel like going PCI Express at the time (and they
were brand new) and having to get a new GFX card.

Well, now I want a 7800 but it seems like they are PCI-X only? Why is that?
Does anyone know if the next gen ATI part will have an AGP version? The
R520 or whatever it is?

TIA
olaf