Both nations added new systems to tie in terms of the number supercomputers that rank.
Also, they are tied at 171 systems each and are also roughly equal in terms of rawcomputing power.
A year ago the United States was the clear leader with 200 systems, while China had 108.
The surprising part was the most energy-efficient machine fell well outside the top 10.
In June this year, it was 566 petaflops.
The Top500 list is considered as one of the most respected rankings of the worlds supercomputers.
source: www.techworm.net