A:AnswerYes this has an included dvi cable and I believe I had to buy an hdmi and display cable separate. I would suggest not using the dvi, it's a noticible difference in video quality. Use an hdmi or display cable it has both ports so you can use it for Xbox and pc. But to answer your question yes it has a dvi cable.
A:AnswerYeah these will work really well in a dual monitor setup. I currently use mine with another monitor and it works very well with the stock stand because you can adjust the height drastically and tilt it.
A:AnswerYes, absolutely, I use this monitor and it’s great. Only downside is the power cord is kinda short. But absolutely it would be great. Try to get it while it’s on sale if you can
A:AnswerThe monitor can run 144Hz so long as the PC can support it. I'm not super familiar with AMD, but from what I can tell, you're going to have a hard time getting the full use out of 144Hz with that graphics card. If you plan on upgrading to a stronger graphics card down the line, I would recommend the monitor, otherwise maybe look for a 60 or 75 Hz.