any reviews or tests showing both 4850's and 4870's in crossfire

[zfactor]

against each other in interested to see who much better the 4870's are in x-fire than the 4850's are... i see a lot of reviews for each card but maybe i missed one where they did both in x-fire?? thanks

[Heretic]

http://anandtech.com/video/showdoc.aspx?i=3341&p=20
I'm certain there are others. Check the review thread in the news section.

[zfactor]

thanks i was hoping to see something like that.. man now i have to decide if its really worth the 600$ for the 4870's or 300$ for the 4850's.. not sure the extra $$ is worth the performance difference..