I would try and put 4 Athlon FX-55's in it if i could and load the shiznat w/ ram man! then i would try and make it my gaming machine if possible. Oh and what kind of video can you put on PCI-X? I wonder cause ive never heard of that lol but i just saw 4 opteron cpus on the same board w/ 32gig of loadable ram. Oh and that ram is allocated to each cpu so like thast 32 divided by 4 and also shared w/ the video. but still thast insaen and i wih i had it!!!!
That's just one big dream dude.
You can't put FX's in there, there's no way to 'try' and put FX's in there, it's server applications, FX's aren't for servers.
It would be impossible to make it a gaming machine, you have to have an OS that supports 2 CPU's muchless 4 of them, so you're talking purely a Server OS, beyond that, the game itself would have to be able to utilize them.
You can't put any worth while vid card in PCI-X and infact I don't know if they even make a PCI-X vid card.