6600 may refer to: CDC 6600, a mainframe computer from Control Data Corporation, first manufactured in 1965 Nokia 6600, a Nokia smartphone released in 2003 Nokia 6600 fold, a Nokia mobile phone released in 2008 Nokia 6600 slide, a Nokia mobile phone released in 2008 , an Nvidia graphics card Radeon RX 6600 series, a line of graphics processing units from AMD Compaq Presario 6600 Desktop PC (HP) computers Audiovox Audiovox ppc6600, a powerpc based pda/cellphone The year in the 7th millennium