Data Bus

A data bus is a computer subsystem that allows the transferring of data from one component to another on a motherboard or system board, or between two computers. This can include transferring data to and from the central processing unit (CPU) to other components. Each one is designed to handle so many bits of data at a time. The amount of data a data bus can handle is bandwidth. 

A typical data bus is 32-bits wide. This means that up to 32 bits of data can travel through a data bus every second. Newer computers are making data buses that can handle 64-bit and even 96-bit data paths. At the same time they are making data buses to handle more bits, they are also making devices that can handle those higher bitrates.