There must be a match between the capability of the video graphics card and the monitor in order to display a picture properly. Video graphics cards can contain their own memory chips. The addition of this memory allows the video card to display complicated graphic information quickly. A game port resembles a smaller parallel port and is used with gaming devices such as a joystick. A sound card contains connections for speaker output as well as microphone and audio line inputs.
Some sound cards come with a built-in game port.
Motherboard still mounted in a case. The CPU is the most vital part of a computer. A CPU is a microprocessor chip that executes all of the stored program instructions for any software used by the computer. The original IBM Personal computer CPU was the 8088 chip. That is why the megahertz speed of a CPU is not a true indicator of its actual speed.