How good would a 7850 2gb be in crossfire?

[EXTERMINATOR644]

I currently have an Asus 7850 2gb and I have seen some benchmarks and crossfire looks promising. They sell for about $75 dollars right now and I would like to crossfire it. I just haven't seen benchmarks of it recently and I was wondering what card would it be equivalent to today.

 

[Tradesman1]

Near same as a 280X