What are the differences between a Socket 5 and Socket 7 motherboard?
• Socket 7 is defined as a superset of Socket 5, and can handle all previous processors that worked in Socket 5. • Changes between sockets: • Socket 7 requires 5.0 amps at 3.3v, while Socket 5 only requires 4.33 amps. • The maximum power dissipation for Socket 7 is 17 watts, two watts higher than Socket 5. • Vertical clearance above the CPU was raised from 1.35″ to 1.75″. • Socket 7 comes with a 321st pin located at AH-32 to be used for a KEY pin, which is not electronically connected to either the CPU or the motherboard. • Pin AL-01 is changed to Vcc2DET to identify split-rail (dual voltage) processors. • Note that most all Socket 5 motherboards only support 1.5x and 2.0x multipliers, making their maximum processor speed 133MHz (66×2.0). And there are also some Socket 5 boards that can only go up to 120MHz. • While Socket 5 and Socket 7 share many similar features, Socket 5 boards are older and often have slightly different electrical characteristics. Maximum amperages and heat dissip
