On Windows, press Ctrl + Shift + Esc, open Task Manager, go to Performance, and click GPU
On Windows, press Windows + R, type dxdiag, press Enter, and check the Display tab
On Windows, right-click the Start button and open Device Manager, then expand Display adapters
On Windows, open Settings, go to System, then Display, then Advanced display, and check the display adapter info
On Windows, open System Information by typing msinfo32 in the Start menu, then check Components and Display
On macOS, click the Apple menu, select About This Mac, and check Graphics
On Linux, open a terminal and run lspci | grep -i vga
On Linux, open a terminal and run lshw -C display
On Linux, use inxi -G if installed
Check the graphics card label on the physical card inside the PC case
Check the original PC or laptop specifications from the manufacturer
Use GPU identification tools such as GPU-Z on Windows