This is my personal custom gaming PC from 2016. I just recently went through the whole system and tested everything and installed Manjaro Linux. You can install Windows 10 if you own a copy. This computer can still play modern games, and perform well at reasonable resolutions and settings. If you have a better video card or plan on upgrading it in the next year, I would recommend an NVIDIA 3060/3070 or an AMD RX 6600 as this PSU can handle either one. I have listed all the components below.
CPU = Intel i7-6700K
MOBO = Asus Z170I PRO GAMING Mini ITX
MEM = Corsair Vengeance LPX DDR4 RAM 16GB
HD = Crucial BX100 500GB (SSD)
PSU = Corsair HX520 (ATX)
GPU = Gigabyte GeForce GTX 1060 Mini ITX
CASE = Cooler Master NR200 Mini ITX (Black)
The price is firm, and you need cash in the exact amount. I will meet at the Target in downtown Queen Creek.