GeForce is a brand of graphics processing units ( GPUs) designed by Nvidia. As of the GeForce 20 series, there have been fifteen iterations of the design. The first GeForce products were discrete GPUs designed for add- on graphics boards, intended for the high- margin PC gaming market, and later diversification of the product line covered all tiers of the PC graphics market, ranging from cost. The 8800 series, codenamed G80, was launched on November 8, with the release of the GeForce 8800 GTX and GTS for the high- end market. A 320 MB GTS was released on February 12 and the Ultra was released on May 2,.