Arent those chips meant to be the disappointment that has caused AMD to back out of doing any more high end processors? might be worth holding off for the new intels (i dont know when they’re due though).
edit: http://www.anandtech.com/show/5058/amds-opteron-interlagos-6200/11
a summary of the rest [Anand] Opteron 6200 performance review | Overclock.net