Ok, this may sound retarded but oh well. I have 2 3870's in crossfire now and would like to upgrade to a 5870. Could I still crossfire the 3870 with the 5870 or what. My mobo supports Tri Crossfire Any Ideas..????
No you can't X-fire those cards. You can X-fire cards from the same generation, i.e 58xx with 58xx, 57xx with 57xx and so on.