Hello and welcome to the forums
It depends on what you want to do with your PC,but for gaming HD 4
850 with a Athlon2 X4 is a better choice
I think you meant 5850...
@ T-Dog :
If you're intending to use your computer as a gaming platform, the GPU will make a huge difference hence justify cutting on the CPU budget to afford a GPU one notch up.
Then again, you can grab a 555 Phenom 2 and play the core unlock roulette, could end up with a quad core for $100
If you're more worried about having a computer that "feel" fast and don't care much about games, put that money toward a SSD instead.