Like the title says. Is it possible or not?
No, you would need to CrossFire it with a R9 380 or an R9 380X. If you have the 2GB R9 380 you could also CrossFire it with an R9 285 2GB. The 280X uses a different GPU core so it's not compatible with the R9 380.
Thanks for the Information, so i can save my Money
and is it possibile to crossfire 380X and 280X?
No, as they use a different GCN version. They are not compatible.
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