You can find your computer's name on a Windows PC by opening the "About" menu, and on a Mac with the "Sharing" menu.
There are a couple of ways to do it, starting with turning your MacBook over Your MacBook's model number is on the packaging ...
To find your graphics card: Look for a section called Display adapters and click the arrow next to it. You'll see your GPU listed there. If you want more details, right-click the GPU name and click ...