a.) why does it report Family 0x0F when it isn't ?
Because it is a revision not a family.
b.) why is the PCI-ID of the DRAM-Controller the very same like on a 2220 (Socket F) ?
Because it is so. AMD did not bother to change that because they changed only DDR->DDR2 and the revision changed. Family is still 0xf...
Thanks Rudolf