Unreal Engine 5 (UE5) was a glimpse into a possibility of what next-generation games could look like when powered the all new graphical engine. Epic Games utilized a PlayStation 5 to show all of the engines incredible details, but many question, what would it look like on a PC.
According to TechPowerUp, you would need a Nvidia GeForce RTX 2070 Super graphics as the bare minimum to run the demo on PC. The PlayStation 5 on the other hand features a custom AMD APU and 10.28 teraflops of computing power, while the RTX 2070 Super boasts nearly 9 teraflops of computing power. This marks a starting point to find a PC equivalent to PlayStation 5, or at least the PlayStation 5-specific demo in this case.
That being said, don't go out and buy the expensive Turing architecture GPU's, at least for right now. Unreal Engine 5 may have been shown, but it will take quite some time for the system to be truly adapted in next-generation games. The next-generation consoles will only launch at the end of the year and speculations tell us that the first batch of next-generation-defining games will not arrive before mid-late 2021.
This meaning that it will be some time before you need to upgrade, and you can expect graphics card makers like Nvidia and AMD to be pushing out new cards that are more powerful than their predecessors. When this happens, you can also expect to see a discount on the current generation of graphics cards.
PlayStation 5 and Xbox Series X are slated to launch worldwide during the holiday season at the end of the year.