I am speculating on what a Playstation 5 build would look like with the way things are going. We do know that the current consoles use a 8 core special AMD cpu. Therefore, I am going to build a system close to what we can do with consumer technology with total cost of $1100.
WD Black 256GB $99
RX 560 4GB EVO $285
500 Watt PS $34
Windows 10 $119