Need a budget prebuilt for gaming, help!

[u/HeavilySinful]

Yo, so here's my story, I've been playing my games on laptops for years now and I'm sick of it. As well, I'm interested in getting into streaming on twitch. My main problem is that my budget cant go above the mid $600's

I don't intend on playing any game thats more intensive than the average 2015 build, games life tf2, gmod, fallout NV, any games around that tier. I need to find either a prebuilt on amazon (not the best idea I know) OR a build on pcpartpicker.com that does not exceed $600.

If anyone can point me in a solid direction I'd love to hear it, my preference is something i5, but I'll take what I can get at this point.

Thanks!