There are a lot of things you can do with your unwanted graphic cards, such as recycling, reusing, or selling them to earn some extra money. If you are still in doubt about buying second-hand equipment, let me tell you that recycling or extending your old electronics lifecycle is an excellent way to save some money, minimize e-waste and preserve natural resources.
The first time I read about a graphic processing unit, I thought it just worked like a regular CPU because both parts are essential for all computers, but now I know they are totally different. A graphics processing unit (GPU for short) processes different pieces of data simultaneously to display high-resolution images or videos on the screen. In contrast, a central processing unit (CPU for short) purpose is performing many tasks almost instantly.