Previously, we reported that IBM's BlueGene computer system had stolen the thunder from the Japanese Earth Simulator as the top of the top 500. Then, of course, Earth Simulator made a comeback, when higher results. Now, IBM has taken the crown back.

IBM's BlueGene/L, developed in cooperation with DoE's National Nuclear Security Administration (NNSA), has achieved a record-breaking performance of 70.72 teraflops based on the industry standard Linpack benchmark.