What's On A Video Card?
Typical Nvidia Based Video card Nvidia Geforce 2 Ultra AGP Video Card
 
SVGA 15 Pin Video Connector
SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.
Super Video Graphics Array (SVGA) Female connectors are always blue coloured and round in shape.

This type of connector connects the video card's output system to any CRT based monitor.

SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.
Digital Visual Interface (DVI) connectors are always white coloured and square in shape. s

This type of connector connects the video card's output system to any LCD (flat panel) based monitor.


Video Card Chipset
SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.

A chipset is a group of integrated circuits, or chips, that are designed to work together to control functioning of devices within the computer.

Video cards have integrated chipsets comprised of a controller chip and stored logic that govern how the card should interact with the operating system and associated components. A video card chipset regulates the speed and voltage frequency in which the card should perform its duties.


Video Card Heatsink
SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.

A heatsink in addition to a video card fan is more commonly found on expensive video cards to help control temperature of the card. Video card heatsinks are normally much smaller than heatsinks found on motheboards but help preserve the longevity of the video card.


Video Card Bus Connector
SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.

Video cards need a way of talking to other parts of the computer much like all expansion cards. The video card plugs into a slot on the motherboard and there speed is based on the bus connector being used. The fastest type of bus type incorporated into motherboard designs is the PCI Express (PCIe). This bus type is based around serial links called lanes. The PCIe 1.1 specification supports x1 (pronounced "by one"), x2, x4, x8, x16, and x32 lanes. In each lane, the most common version PCIe 1.1 carries 250 MB/s in each direction. Every lane of the PCIe is a full duplex link; capable of simultaneous transmit and receive. The PCIe 1.1 bus runs at 2.5 GHz. An explicit clock is not used; instead the data stream is encoded using the 8b/10b scheme, which ensures that there are sufficient transitions within a single 10 bit character to properly and reliably recover the clock.


Video Card Memory
SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.

Video memory is a dedicated housing unit for the graphics adapter to store data while it performs a variety of functions. The more video memory the higher the cost of any given card. Modern video cards house at least 128 MB of video memory, but it is not uncommon for high end video cards to be equipped with 512 or more video memory.

 
Video Card Fan
SVGA 15 Pin female connectors connect the video card to a standard CRT monitor.

A sophisticated video card fan can cool a video card very easily and help preserve the longevity of the device. Video card fans are more prevalent on higher end video cards.