Tianhe-I

Tianhe-I is a supercomputer made and operated in the People's Republic of China and has been active since October 29, 2009. Right now, it is the second fastest supercomputer in the world, replacing the Jaguar supercomputer. It has 98,304 GB of memory and has 2.507 petaflops at its peak. It uses a Linux operating system. It is being used for finding energy sources and doing simulations of aircraft right now.
Upgrade.
It used to have 5,010 CPUs and 2,560 GPUs and was ranked the fifth-fastest supercomputer. After the upgrade, it now has 14,336 CPUs and 7,168 GPUs, making it the fastest.