What are you upgrading from?
While I agree with HiTechObsessed that the paring is pretty good - I wouldn't upgrade a (say) 5770 to the 250x... but it would be a great upgrade from a ~4570 or something.
There is nothing wrong with having an older CPU bottleneck a GPU, if you are planning to upgrade the graphics now and a new CPU/Mobo in x months - nothing says you can't go higher than a 250x now.