Graphics-chip underdog ATI Technologies is expected to introduce new chips next week that will dramatically increase the graphics performance of budget PCs.ATI has scheduled press events next week to discuss "next-generation integrated graphics." Analysts believe the company will unveil the RS300, a new family of integrated chipsets, PC components that combine a graphics processor with a chipset that controls basic PC functions such as memory use. An ATI representative did not respond to requests for comment, but the company typically does not discuss unannounced products. Integrated chipsets cost significantly less than standalone graphics processors and have made rapid advances in...