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The R420 GPU, developed by ATI Technologies, was the company's basis for its 3rd-generation DirectX 9.0/OpenGL 2.0-capable graphics cards.Used first on the Radeon X800, the R420 was produced on a 0.13 micrometer (130 nm) low-K photolithography process and used GDDR-3 memory.
Model – The marketing name for the GPU assigned by AMD/ATI. Note that ATI trademarks have been replaced by AMD trademarks starting with the Radeon HD 6000 series for desktop and AMD FirePro series for professional graphics. Codename – The internal engineering codename for the GPU. Launch – Date of release for the GPU.
Technology developed for a specific Radeon generation could be built in varying levels of features and performance in order to provide products suited for the entire market range, from high-end to budget to mobile versions. In 2000, ATI acquired ArtX, which engineered the Flipper graphics chip used in the GameCube video game console
ATI released the successor to the R500 series with the R600 series on May 14, 2007. ATI does not provide official support for any X1000 series cards for Windows 8 or Windows 10; the last AMD Catalyst for this generation is the 10.2 from 2010 up to Windows 7. [1] AMD stopped providing drivers for Windows 7 for this series in 2015. [2]
The ATI Wonder is a series of video cards for the IBM Personal Computer and compatibles, introduced by ATI Technologies in the mid to late 1980s. [ 1 ] [ 2 ] [ 3 ] These cards were unique at the time as they offered the end user a considerable amount of value by combining support for multiple graphics standards (and monitors) into a single card.
The new high-end R4x0-generation arrived with the X850 series, equipped with various core tweaks for slightly higher performance than the "R420"-based X800 series. The "R480"-based X850 line was available in 3 forms: the X850 Pro , the X850 XT , and the X850 XT Platinum Edition , and was built on the reliable high-performance 130 nanometer Low ...
ATI implemented a caching technique it called Twin Cache Architecture (TCA) with Rage 128. The Rage 128 used an 8 kB buffer to store texels that were used by the 3D engine. In order to improve performance even more, ATI engineers also incorporated an 8 KB pixel cache used to write pixels back to the frame buffer.
Since the release of the codenamed Spider desktop platform from AMD on November 19, 2007, the CrossFire setup has been updated with support for a maximum of four video cards with the 790FX chipset; the CrossFire branding was then changed to "ATI CrossFireX". The setup, which, according to internal testing by AMD, will bring at least 3.2x ...