AMD on Wednesday unveiled the ATI Radeon HD 4830 graphics card, offering users a lower-cost DirectX 10.1 and OpenGL platform, combined with several of ATI's high-definition video and audio technologies. AMD asserts that the card offers many upscale features at usable frame rates, such as full screen anti-aliasing and anisotropic filtering; it cuts down on performance from the Radeon HD 4850 and 48
