Name the most peak performance for october 2006 - january 2010
create table table_27765443_2 (maximum_peak_performance___teraflops__ varchar, period_of_operation varchar, PRIMARY KEY (maximum_peak_performance___teraflops__))
select maximum_peak_performance___teraflops__ from table_27765443_2 where period_of_operation = "october 2006 - january 2010"