Insignificancies so far:
Power usage
Temperature
VRAM

Ignoring those insignificant things can you attempt to tell me why the 390 is better than the 970?

And Immortal just so you know only the 600$ build is just for Rust but the Upgraded Version which will be more like Mong's Suggestion including the 970 will be for the other purposes that I listed as well ;)

And Immortal came with a very good argument Kyure which he'll most likely cite now that you've requested that. He has swayed me also :D

And no Kyure I'm not entirely sure yet which is better but I still like the 970 as of this moment :)

And Kyure it's already been the case a few times that your own link's bottomlines disagree with you.

Also this is actually a very productive argument guys keep it up ;)

Kudos to both of you :)