The PlayStation 5 (PS5) supports 4K resolution for gaming, and all versions of the console are capable of outputting games and videos in this high resolution. By default, the PS5 should automatically output video in 4K if it is connected to a 4K TV and the appropriate cables are used. However, if you want to double-check that your PS5 is outputting video in 4K, you can do so by navigating to the console's video output settings.
To check the current video output settings on your PS5, go to the Settings menu, then select Screen and Video, and then select Video Output. From here, you can view your Current Video Output Information to see the current resolution that the console is outputting. If the resolution is listed as 3840 x 2160, then your PS5 is currently set to output video in 4K. Additionally, if you are playing a game that supports 4K, you should see a 4K label displayed next to the game's title on the PS5's home screen.
It's important to note that in order to use the PS5's 4K capabilities, you will need a 4K TV or monitor and a high-quality HDMI cable. If you are using a 1080p TV or monitor, the console will output video at that resolution instead. Additionally, some games may not support 4K resolution, so it's always a good idea to check the game's specifications to see if it supports 4K before purchasing.