Ra nkName Manufac turerCountry Total Cores Rmax, Tflop/s Proces sor Proc Speed, MHz Acceler ator 1TitanCray Inc. United States560640 17590 Opteron 6274 16C 2.200GHz 2200 NVIDIA K20x 2SequoiaIBM United States1572864 16324 Power BQC 16C 1.600GHz 1600No