What's the part number of the model with TDP of 2.9 (max.4.1~5.4) w?
create table table_24096813_15 (part_number_s_ varchar, tdp varchar, PRIMARY KEY (part_number_s_))
select part_number_s_ from table_24096813_15 where tdp = "2.9 (max.4.1~5.4) w"