Best agp desktop

Not sure why you're asking, but it was probably some DIY system that had a hybrid graphics card set up (both AGP and PCI-E slots). Some of the Intel socket 775 hybrid boards may have been able to take the first generation of Core2Quad processors and probably up to 8 or 16GB of RAM.

-Wolf sends

Hopefully you don't intend spending any money on such a system...?