Better yields than expected have boosted the sales of 3Dfx Interactive Inc’s Voodoo graphics chips, and the company now expects growth in its fourth quarter to be at least double the 40% revenue growth over its $10m third quarter sales previously predicted. The company’s good fortunes are in stark contrast to the hard times currently being endured by its arch-rival Videologic Group Plc (CI No 3,304), and 3Dfx says the launch of its next generation Voodoo 2 chipset, due to become commercially available in the first quarter of next year, should increase demand even further.