VIDEO CARDS
VIDEO CARDS
TABLE OF CONTENTS Intro to Video/ Graphics cards Components Functions of a Graphics Card Various types Color Depth Bit Depth Uses Advantages
VIDEO CARD/ GRAPHICS CARD
Also known as Video display Adapters. Is a board that plugs into the computer
to give it display capabilities. The display capabilities of a computer,
depends on: the logical circuitry (provided in the video
adapter) and the display monitor.
GRAPHICS CARD
COMPONENTS
FUNCTIONS OF A GRAPHICS CARD
TYPES OF VIDEO CARDS
MANUFACTURERS Intel: develop IGPs (integrated graphics
processors) AMD (acquired ATI) develop GPUs Nvidia also develop GPUs Different manufacturers take GPUs and
other components to assemble video cards; thus creating slight variations of video cards with same GPUs
Video cards are marketed with GPU manufacturer’s brand name
Most popular video brands are the Radeon of ATI and GeForce of Nvidia
COLOR DEPTH
Determined by the intensity of three beams of light (Red, Green and Blue) and the amount of information stored about a pixel
Different Modes8 Bit – 256 Color Mode 16 Bit – High Color mode24 Bit – True Color Mode
BIT DEPTH Bit Depth : The number of bits used to
describe a pixel is known as its bit depth. Example:
24bit – Bit Depth means 8 bits for each Primary color, around 17 Million Color Combinations, around 10,000,000 discernible Colors Thus offers True Color System
USES Animation Gaming – both PC and console Design/Drafting Special effects creation/editing Medical Instruments And other purposes where fast
rendering and high resolutions are needed
ADVANTAGES Motion Blur
Texture Mapping Lens Flare Fresnel Effect Anisotropic Filtering
Motion Blur
Texture Mapping
Lens Flare
Fresnel Efect
ANISOTROPIC FILTERING