I'm pretty sure the 5770 will smoke a 4850. Overclock it and you're looking at 4890 or close to 5850 scores. That's my game plan anyway.I've heard of soooo many people getting it! At first I heard it wasnt that good and was outperformed by 4850s/4870s
P *
R *
I *<------- sweet spot (5770)
C *
E*
PERFORMANCE
I'd like to see the 5830 hit $200 to be honest. AMD may adjust their prices when Nvidia finally gets their act together but I'm not really holding out much hope.