Both would be fine for gaming and streaming, the i7 achieves better frame times and higher average fps than the 1800x in the majority of games, but the 1800x is an 8 core 16 thread workhorse that crushes the 7700k in anything that will make use of all those cores and threads, games not being one of them. Hard to say for strictly gaming and streaming I would probably get the 7700k, but im sure many would say otherwise. What do you mean a 2 pc setup? Build a ryzen and intel system? Not unless your swimming in money, that would be a waste.