The age of specific computer models (when it comes to desktop PCs) is over. It's all about the parts inside the machine now, and it is [i]highly[/i] recommended that you build it yourself, or at least order the parts and have someone else assemble it for you. 

Intel i5 or i7, or maybe an AMD Ryzen processor? NVIDIA Graphics cards are the most popular, but what budget are you on and what games do you want to play, and at what resolution? 1080p? 4k? How big do you want your SSD to be? Are you going air cooling or water cooling? etc etc.