CREATE TABLE table_74039 ("Model" CLOB, "Launch" CLOB, "Model Number" CLOB, "Code name" CLOB, "Fab  (  nm  ) " FLOAT, "Bus interface" CLOB, "Memory  (  MiB  ) " CLOB, "Core  (  MHz  ) " CLOB, "Memory  (  MHz  ) " CLOB, "Config core 1" CLOB, "Pixel  (  GP /s ) " CLOB, "Texture  (  GT /s ) " CLOB, "Bandwidth  (  GB /s ) " CLOB, "Bus type 2" CLOB, "Bus width  (  bit  ) " FLOAT, "Processing Power GFLOPs" CLOB, "DirectX" CLOB, "OpenGL" CLOB, "TDP  ( Watts )  GPU only" CLOB)

What was the maximum fab (nm)?
SELECT MAX("Fab ( nm )") FROM table_74039
SELECT MAX("Fab ( nm )") FROM "table_74039"