My understanding is that the opertons (skt940) have been out a long time now, while X2s are obviously fairly new. They were server style chips because of the goofy slot. The X2 seemed to be aimed at more of a "home pc" market with it being 939. I believe the opterons took registered ram, while it seems that the X2s don't. Also most opteron 940s don't have SSE3 support, and X2 does.
if the northwood is for rendering stuff. and the fx for gaming. the opteron for other workstation things.
then why even go X2, or FX2
are the X2s better than the opteron, in workstation suff.
it like AMD made two workstationn chips, X2s, wich includes the FX2, and opteron. why?
As for why they decided to merge the Opterons over to 939, I don't know, but as you can see in my sig, I'm not arguing