Cache: Cache is the fast memory that is used between CPU and RAM. Processor Cache Memory is a type of RAM which is very fast and keeps the processor from slowing down. Cache memory is needed because it is central to the communication in the computer between CPU and RAM. These work together at different speeds.
RAM: Random access memory is a type of memory inside the computer that makes the computer run. RAM makes a constant flow of data between the processor and the hard drive. For example when you run software such as Microsoft Word it is copies to the RAM from the hard drive. Once the program is copied the program can travel at high speeds to the processor where the program will be run.
Graphics Card: Graphics Cards allow