The Cell based system Roadrunner tops the list...

"The 31st edition of the TOP500 list was released at the International Supercomputing Conference in Dresden, Germany. Since 1993, the list has been produced twice a year and is the most extensive survey of trends and changes in the global supercomputing arena. 

“Over the past few months, there were a number of rumors going around about whether Roadrunner would be ready in time to make the list, as well as whether other high-profile systems would submit performance numbers,” said Erich Strohmaier, a computer scientist at Lawrence Berkeley National Laboratory and a founding editor of the TOP500 list. “So, as the reports came in during recent weeks, it’s been both exciting and challenging to compile this edition.” 

The Roadrunner system is based on the IBM QS22 blades which are built with advanced versions of the processor in the Sony PlayStation 3, displaces the reigning IBM BlueGene/L system at DOE’s Lawrence Livermore National Laboratory. Blue Gene/L, with a performance of 478.2 teraflop/s (trillions of floating point operations per second) is now ranked No. 2 after holding the top position since November 2004."

Numbers are growing by Second. Blue-Gene L, once Brain of All Crunchers, now at 1/3 Top Speed? All Changes in 4 years from sub hundred petras, is Massive redesign, NOT just some fine tuning.

I too, Speak Japaneses Speak....ooi,ou,yaya, Ho-ho, ouuu. lab-ba-daba-dew.
Drashek