World's Fastest Computer in the US

Did Prop2 come out early? 
http://news.yahoo.com/worlds-fastest-supercomputer-crowned-us-192428438.html

http://news.yahoo.com/worlds-fastest-supercomputer-crowned-us-192428438.html
Comments
Interesting figure there. I wonder how that compares with a Propeller, Arm, Z80 etc?