An recent article in published in HPC Wire Number Crunching, Data Crunching and Energy Efficiency: the HPC Hat Trick” on February 2, 2012 recognized TSUBAME2.0 as the "Tsubame is the clear overall winner" comparing the supercomputing performance rankings "The Top500", "The Green 500", and "The Graph 500" amongst the world's top supercomputers.

Reference:
Number Crunching, Data Crunching and Energy Efficiency: the HPC Hat Trick (HPC wire)