What are some of the best desktop computers for what I need?

I’m getting a new desktop computer. I haven’t had one in so long.

I need something with good graphics power because I need to use a video game enginge called Unreal 4, and I also just handle a lot of media like video editing. So I can’t have it lagging on me or freaking out because of virtual memory.

I know Intel Integrated HD graphics are pretty much like the basic, bottom of the line graphics. So I want to avoid that. At the end of the day though, so long as I get something better than Intel graphics I can always get a new graphics card too if it’s still not as powerful to run Unreal 4.

My budget is around $1,000.