which core i3 3220?

:frown:what is the difference between this:Intel Core i3-3220 3.30GHz 3rd Gen. Processor - Ryans Computers
and this:http://ryanscomputers.com/mainhome/item_Details/1757

i'm very confused.:confused::confused::confused::banghead: the only difference between the name of the first and the second is the bracketed bk at the end of the second.