Any Socket 939 mother board will run your socket 939 (1xx) Opterons. Of course people who buy a socket 939 system board knows that the Processor memory controller will be capable of running beneath dual channel function, but using the same coloring on both sockets usually leads users to think that motherboard uses solitary channel mode. As an effect, the new dual-core Opteron 100 processor chips will drop right into a plain ol' Outlet 939 motherboard and converse happily with a load up of unbuffered DIMMs, just like a great Athlon 64. Unlike other Opterons, however, the dual-core 100 sequence chips take advantage of the Plug 939 motherboard infrastructure made for the Athlon 64. It just isn't possible to cut one pin away from a Socket 940 model and have it perform in a Socket 939 system board. Think of Socket 939 and also Socket 940 processors since first cousins in which can't live in the identical house.