A compatible one from the gate no.
There are bios updates out for more CPU support. You have to check if the mobo you got has the revision update already for the CPU one you want.
For example. CPU X is supported only with Revision 3. The mobo being sold is Revision 1. You buy the mobo. When you get it and boot it up, you have to then flash the bios with the file you downloaded from another computer to revision 3 before the comptuer will actually work.