Nothing that would make it differentiate from the Athlon's. However it would still make a Great HTPC processor. To be perfectly honest the difference in price between the 980 and the X3/X4 is not Earth Shattering in all honesty. In addition the HTPC will possibly have secondary-roles that would require the Phenom.
Phenom 970 = $170
Athlon II X3 = $70