On Windows, press Ctrl + Shift + Esc, open Task Manager, and check the Performance tab under GPU
On Windows, press Windows + R, type dxdiag, press Enter, and check the Display tab
On Windows, right-click the Start button, open Device Manager, and expand Display adapters
On Windows, open Settings, go to System, then Display, then Advanced display, and check the display adapter info
On Mac, click the Apple menu, select About This Mac, and check the Graphics line
On Linux, open a terminal and run lspci | grep -i vga
On Linux, open a terminal and run glxinfo | grep “OpenGL renderer”
On Linux, open a terminal and run inxi -G
On a desktop PC, check the label on the graphics card itself if you can open the case safely
On a laptop, check the manufacturer’s specifications page using your exact model number