Nebulae (Chinese: 星雲) is a petascale supercomputer located at the National Supercomputing Center (Shenzhen) in Shenzhen, Guangdong, China. Built from a Dawning TC3600 Blade system with Intel Xeon X5650 processors and Nvidia Tesla C2050 GPUs, it has a peak performance of 1.271 petaflops using the LINPACK benchmark suite.[1] Nebulae was ranked the second most powerful computer in the world in the June 2010 list of the fastest supercomputers according to TOP500.[2] Nebulae has a theoretical peak performance of 2.9843 petaflops. It is currently the fourth most powerful supercomputer in the world and China's second most powerful.