My budget is up to $1000.
Remember, I just want a stable and capable workstation.
With AGP 8x if possible, I wouldnt want to buy PCI-E card.
If it can run games at speed equivalent to 2600+ Sempron with Radeon 9600 Pro it will be enough, I don't play newest games anyway.
I want a dual capable Opteron processor, in case I ever want to build a dual Opteron, they work in a single mode too, don't they?
And Serial ATA raid would be great and USB 2.0 support.