I have a 60" Samsung 4k TV with HDR, with a PS4 Pro and an Xbox One X hooked up to it in my living room, and upstairs I have an Xbox One S connected to a 50" Panasonic Plasma.
I mostly game on my MSI GE72 6QF laptop with an i7 6700HQ, GTX 970M, 16GB DDR4, 1TB Samsung EVO 950 SSD, because it's just more comfortable and I can play in my bed. I love that laptop to bits, but the 970M isn't really enough for 60fps at high settings anymore. It still outperforms the PS4 Pro, though
My PC hasn't been turned on for months, after I've sold my GTX 1080. The rest of that system is still quite alright for me:
i7 6700K
16GB DDR4
250GB SSD for Windows, a 2TB HDD as main drive for games, plus 2 500GB HDDs for other stuff
Corsair RM 750X PSU
Phanteks Enthoo Evolv X case
The PC is connected to a 32" 1080p LG monitor, which is fine, but I'd really like to get a bigger and faster monitor with a higher resolution when I finally revive that PC with a GTX 3080.