55" Samsung KS7000 4K HDR TV - Upscalling/Refresh Rate?

[Watlinguk]

Hi guys. I'm looking at building a mid range spec gaming pc to run through my 55" Samsung KS7000 4K HDR TV.

I have two questions that need answering please.

I've been told this is a 120hz refresh rate panel. I don't know if this is false or not? Can someone with the TV confirm this please. If it is I'm guessing i can run my PC games at 120HZ instead of 60HZ?

My last question. Can i run my PC desktop/Games in 1080P and will it upscale properly to fill the screen size without look stretched or odd please?

If someone can clear these questions up for me i would be greatly appreciative!

 

[Watlinguk]

I'm wondering if I'd be best selling the 4k TV and buying a 1080P tv that supports a 120hz refresh rate? I'm trying to get the whole couch/PC/TV combo on the go. Don't have much room for a desk etc. Can you guys recommend and low input lag,120hz, 1080P tv's that would be great for gaming please?