What is the server power supply?

The server power supply refers to the power supply (POWER) used on the server. It is a switching power supply just like the PC (personal computer) power supply. The server power supply can be divided into two types: ATX power supply and SSI power supply according to the standard. The ATX standard is more commonly used, mainly for desktops, workstations and low-end servers; while the SSI standard is produced with the development of server technology and is suitable for servers of various grades.

ATX standard
The ATX standard is a specification introduced by Intel in 1997, and the output power is generally between 125 watts and 350 watts. ATX power supplies usually use 20Pin (20-pin) double-row rectangular sockets to power the motherboard. With the introduction of Intel’s Pentium4 processor, the power supply specification has also been revised from ATX to ATX12V. Compared with ATX power supply, ATX12V power supply mainly adds a 4Pin 12V power output terminal to better meet the power supply requirements of Pentium4 (2GHz main frequency). P4 power consumption reaches 52.4 watts).

SSI standard
The SSI (Server System Infrastructure) specification is a new server power supply specification launched by Intel and some major IA architecture server manufacturers. The introduction of the SSI specification is to standardize server power technology, reduce development costs, and extend the service life of servers. Including server power specifications, backplane system specifications, server chassis system specifications, and cooling system specifications.

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