How does a graphics card work? GPUs and Graphics cards explained.

A graphics card is essential for your computer to display images on a screen, performing countless calculations in milliseconds. It acts as a specialized computer within your main system, dedicated to rendering images, especially those representing a three-dimensional world.

A graphics card has its own processor, called a GPU (Graphics Processing Unit). The main difference between a GPU and a CPU lies in their cores. CPUs typically have around eight powerful cores for complex logic and instructions, handling one task at a time. GPUs, on the other hand, have thousands of simpler cores designed to perform many simple tasks simultaneously, which is ideal for graphics rendering.

The ability of a GPU to perform numerous calculations quickly is crucial for rendering 3D worlds. Computers use vector graphics, plotting coordinates on a 3D graph and drawing lines based on mathematical calculations. This process, involving a high volume of quick computations, is where GPUs excel, and it's also why they are effective for cryptocurrency mining.

Similar to a regular computer, a graphics card has its own RAM, known as video RAM or VRAM. VRAM stores easily accessible data that is frequently used in the image creation process, sending it to the GPU as needed to ensure efficient rendering.