I'm planing to build a PC, my APU is an AMD A10-6790k, my GPU is an AMD Radeon R7 260X. My question is, will I be able to crossfire? And how exactly can I do it?
By Crossfire, If you mean use 2 x R7-260X cards, that will depend on the motherboard you have. If you mean dual graphics by using the discrete card with the on-die GPU, the 260X won't work for that.