Crossfire R9 380 with R9 370?

[blreese]

I was wondering if I could put an R9 380 and an R9 370 together in the same system using crossfire.

 

[Rogue Leader]

No, they need to have the same chipset to be able to crossfire. SO for Example the R9 380 can crossfire with the R9 285 because they use the same chipset. The 380 would be downgraded to the speed of the 285.