Abstract:Dawning4000A is a key project supported by 863 plan of China, and finished by National Research Center for Intelligent Computing Systems (NCIC). Its performance and functionality is in the leading position in the world, especially on high density server designing, massive cluster management technology, and grid router. This article briefly introduces the aim and strategy of developping Dawning4000A superserver, presents the testing and performance evaluation results and outlines the application areas of the superserver.