ATX and SSI standards for server power supplies

The server power supply refers to the power supply used on the server. It is a switching power supply like the PC power supply. According to standards, server power supplies can be divided into ATX power supplies and SSI power supplies. The ATX standard is widely used, mainly for desktop computers, workstations, and low-end servers; The SSI standard has emerged with the development of server technology and is suitable for various grades of servers. Next, we will introduce information about these two standards.

Here is the content list:

• Introduction of ATX Standard

• Introduction of SSI Standard

• Requirements of SSI Standard for future trend

Introduction of ATX Standard

One of the standards of server power supplies is ATX Standard.

The ATX Standard was introduced by Intel in 1997, with an output power typically between 125 watts and 350 watts. ATX power supplies typically use a 20 Pin (20-pin) double-row rectangular socket to power the motherboard. With Intel's introduction of the Pentium 4 processor, the power specification has also been modified from ATX to ATX12V. Compared to ATX power, ATX12V power mainly adds a 4Pin 12V power output to better meet the power supply requirements of the Pentium 4 (the P4 power consumption of the 2GHz main frequency reaches 52.4 watts).

Introduction of SSI Standard

Another standard of server power supplies is SSI Standard.

The SSI (Server System Infrastructure) Standard is a new server power specification introduced by Intel in collaboration with some major IA architecture server manufacturers.

The introduction of the SSI Standard is designed to standardize server power technology, reduce development costs, and extend the service life of servers, which mainly includes server power specifications, server chassis system specifications, backplane system specifications, and cooling system specifications.

Requirements of SSI Standard for future trend

With the more standardized SSI Standard, the SSI specification is more suitable for the development of servers, and future server power supplies will also adopt the SSI Standard.

• High frequency of CPU use

The SSI Standard is conducive to promoting the development of IA servers. In the future, the CPU main frequency that can be supported will become higher and higher, the power consumption will become larger, the hard disk capacity and rotational speed will also become larger, and more and more high-speed devices can be attached.

• Higher capacity

The server uses a considerable number of accessories, supporting four or more CPUs, mounting hard disks ranging from 4 to 10 blocks, and memory capacity can also be expanded to as much as 10GB. These accessories are large consumers of energy, such as the Xeon (Xeon) processor used in high-end industrial standard servers, whose power consumption has reached over 80 watts (W), and the power consumed by each SCSI hard disk is also above 10 watts (W), Therefore, the power required by the server system is much higher than that of a PC. Generally, only 200 watts of power is sufficient for a PC, while the server requires a high-power power supply of over 300 watts to up to kilowatts.

The above is an introduction to the two standards for server power supply. If you would like to learn more about the server power supply, please visit the website of Guangzhou Baocheng Electronic Technology Co., Ltd. Our website is https://www.daohe.com.