The Green500 List was created by Kirk W. Cameron and Wu-chun Feng, then both associate professors in Computer Science at Virginia Tech, in 2006.
The power measurement techniques that form the basis of the run rules were based on Cameron's early work in supercomputer energy efficiency initially funded by the National Science Foundation (Awards: #0347683, #0614705).
[5] The Cineca Eurora supercomputer is equipped with two Intel Xeon E5-2687W CPUs and two PCI-e connected NVIDIA Tesla K20 accelerators per node.
[6] As of November 2014[update], the L-CSC supercomputer of the Helmholtz Association at the GSI in Darmstadt Germany topped the Green500 list with 5.271 GFLOPS/W and was the first cluster to surpass an efficiency of 5 GFLOPS/W.
The then-top three supercomputers of the list used PEZY-SC accelerators (GPU-like that use OpenCL)[8] by PEZY Computing with 1,024 cores each and 6–7 GFLOPS/W efficiency.