The cards can display 1.07 billion colors when used with 10-bit displays.
ATI also introduced the Radeon X1950 series that offers very fast performance and high quality imaging, aimed at serious gamers and creative professionals. The cards will cost £238 / $449.
The X1950 can render fast frame rates at high resolutions or maximize image quality settings for users of mainstream resolutions.
All the new cards are supported by Catalyst, ATI software that offers gamers ongoing software updates for performance, stability and new features.
Compatible with Microsoftís upcoming Vista operating system and capable of supporting high-definition formats, the cards are meant to improve images displayed on PCs from games, DVDs and photos.
Both the new low-end and high-end cards are expected to ship on September 14.