Once you know the name and manufacturer of the graphics card in your PC, delve into some research on Google to learn more about it. It’s usually pretty easy to find out the minimum GPU requirements for UHD streaming or gaming for instance.
You might have seen a number in the name of your GPU, for example NVIDIA GeForce 1080. This number relates to the amount of denotes the graphics card has. Normally, the higher number of denotes a GPU has, the more powerful it is. You can use this number to check the minimum requirements for whatever it is that you want to use your PC for. For instance, a game that has a minimum requirement of a GeForce 1080 GPU might not run properly, or at all, on a GeForce 1060 graphics card.