There aren't any good options left for op.
If you can get a g620/g630 with a 3k cheap mobo then it would be a better option.
Budget can also be increased if you sell your mobo
you could have atleast checked up for you CPU Support before you made the leap. Though no new stock of X4 and X6 are hard to come by, you could have got a used procy at that budget. I have not hear proccy going bad, though correct me if im wrong