America's leadership in science -- high-power computing, to be precise -- has been in question for the past few years.
A 2016 report from the National Security Agency and the Department of Energy warned that China was poised to outrank America in high-performance computing and asked for a surge of spending in supercomputing development.
The Chinese government has been working furiously on high-performance computing in recent years, investing billions in its tech industry.
Summit is twice as powerful -- as measured in petaflops -- as China's 2017 winner of the world's fastest supercomputer contest and eight times more powerful than Oak Ridge's last system, Titan.
More than just bragging rights
Summit's dominance is expected to be announced officially when the TOP500's mid-year report comes out in a few weeks. It's a list scientists put together twice a year of the top 500 fastest supercomputers.
"Unless the Chinese pull off some sort of surprise this month, the new system will vault the US back into first place," the group said.
And it's more than just a victory lap at stake.
Summit will be used, in part, to invigorate research on artificial intelligence, astronomy and health care. So, the technology to create robots, discover new stars in our galaxy and fight disease just got a big boost.