Graphics Cards and Sound Cards 1 Many PCs come with IGP (Integrated Graphics Platform) graphics capabilities are built into the main system motherboard IGP is not powerful enough for the demands of modern 3D games Office work require only basic performance Some PCs also have a separate graphics adapter Expansion card that processes instructions sent by the CPU via a dedicated graphics processor Acts like a small motherboard specifically dedicated to display For serious graphics, video editing or gaming, a good graphics card becomes an important consideration Graphics card (Video card or adapter)
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Graphics Cards and Sound Cards 1 lMany PCs come with IGP (Integrated Graphics Platform) lgraphics capabilities are built into the main system motherboard.
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Graphics Cards and Sound Cards
1
Many PCs come with IGP (Integrated Graphics Platform) graphics capabilities are built into the main system motherboard IGP is not powerful enough for the demands of modern 3D games
Office work require only basic performance Some PCs also have a separate graphics adapter
Expansion card that processes instructions sent by the CPU via a dedicated graphics processor
Acts like a small motherboard specifically dedicated to display
For serious graphics, video editing or gaming, a good graphics card becomes an important consideration
Graphics card (Video card or adapter)
Graphics Cards and Sound Cards
2
Graphics cards use their own dedicated memory A card with 64MB is adequate for basic office tasks At least 512MB is required for the latest games and video applications Graphics card memory cannot usually be upgraded later IGP systems often use a portion of system RAM, which may reduce the computer's
overall performance
The quality of a display system largely depends on its resolution How many pixels it can display & how many bits are used to represent each pixel A pixel (Picture Element), is a single point in a graphic image Graphics monitors display pictures by dividing the display screen into millions of
pixels The pixels are so close together that they appear connected
Graphics cards
Graphics Cards and Sound Cards
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The number of bits used to represent each pixel determines how many colors or shades of gray can be displayed
In 8-bit color mode, the color monitor uses 8 bits for each pixel, making it possible to display 28 (256) different colors or shades of gray
True Color systems use At least 24 bits per pixel
8 bits for Red,
8 bits for Blue,
8 bits for Green
allowing them to display more than 16 million different colors
Graphics cards
Graphics Cards and Sound Cards
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Graphics monitors arrange pixels in rows and columns320 x 200 pixels800 x 600 pixels 1024 x 768 pixels 1280 x 1024 pixels
Bits per pixel8, 16, 24, 32
Graphics
Graphics Cards and Sound Cards
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2D graphics cards tend to use between 1MB and 4MB of RAM for the screen800 x 600 pixels => 1,440,000 bytes1024 x 768 pixels => 2,359,296 bytes1280 x 1024 pixels => 3,932,160 bytes