Get this;
Belarc Advisor - Free Personal PC Audit
Run it on the machine and it should tell you what you need to know. Some graphic cards may be "invisible" to the system unless the proper drivers are installed, in such a case you need to open the case and look at the card. Many modern machines have "on-board" graphics, this means they are integrated into a chip on the main board, and there is no "extra" card visible in the expansion slots.
QUOTE
A
video card,
video adapter,
graphics accelerator card,
display adapter, or
graphics card is an
expansion card whose function is to generate output images to a display. Many video cards offer added functions, such as accelerated rendering of
3D scenes and
2D graphics, video capture, TV-tuner adapter, MPEG-2/MPEG-4 decoding, FireWire, light pen, TV output, or the ability to connect multiple monitors (
multi-monitor). Other modern high performance video cards are used for more graphically demanding purposes, such as PC games.
Video hardware can be integrated on the
motherboard, often occurring with early machines. In this configuration it is sometimes referred to as a
video controller or
graphics controller. Modern low-end to mid-range motherboards often include a graphics chipset developed by the developer of the
northbridge (i.e. an
nForce chipset with
Nvidia graphics or an
Intel chipset with Intel graphics) on the motherboard. This graphics chip usually has a small quantity of embedded memory and takes some of the system's main RAM, reducing the total RAM available. This is usually called
integrated graphics or
on-board graphics, and is low-performance and undesirable for those wishing to run 3D applications. A dedicated Graphics Card on the other hand has its own RAM and Processor specifically for processing video images, and thus offloads this work from the CPU and system RAM. Almost all of these motherboards allow the disabling of the integrated graphics chip in
BIOS, and have an
AGP,
PCI, or
PCI Express slot for adding a higher-performance graphics card in place of the integrated graphics. Despite the performance limitations, around 95% of new computers are sold with integrated graphics processors, leaving it for the individual user to decide whether to install a dedicated Graphics card.UNQUOTE
Quoted from
http://en.wikipedia.org/wiki/Video_card
Regards....Mike Connor