$329 is a sweet deal, especially with the BIOS mod.
But it would be more or less a sidegrade from a GTX 1080.
Might still be fun to swap it out and see what you think.
I don't plan to pull the 1080 - I do some cuda accelerated stuff on that system so wouldn't make sense. But I have enough parts lying around to put another system together to play with, including a 3700x. Just haven't flashed the b350 board to support the chip yet - have to pull a chip out of another system temporarily to do it.
Funny thing is, the decidedly mid range system it'd end up being will probably outperform what was a one step below absolute top of the line hedt system of 2 years ago in most stuff.