It's possible to find the IMEI number on your iPad if you have a model with cellular capabilities, or find the serial number ...

You can find a Mac's serial number through the About This Mac menu, by locating the number on the physical device, or online.

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 ...