What is the difference between an ATX power supply and an EPS power supply?

There are some differences between ATX power supplies and EPS power supplies. The features and differences between these two types of power supplies will be described in detail below.

ATX power supplies and EPS power supplies are both power supply devices used in computer systems. Their most basic function is to convert alternating current (AC) into direct current (DC) suitable for use by computers, and to provide stable voltage and current.Computer Case

Firstly, as can be seen from the names, ATX power supplies are named according to a specification, whereas EPS power supplies are a more generic type of power supply.ATX power supplies are designed according to the ATX (Advanced Technology eXtended) specification, which was introduced by Intel to standardise the design of computer chassis and power supply devices. EPS power supplies, on the other hand, are designed according to the EPS (Entry-level Power Supply) specification, which is a more generic specification for different types of servers and workstations.TFX SFX Power Supply

There are some differences between ATX power supplies and EPS power supplies in terms of power supply power. Generally speaking, ATX power supplies have a smaller power range, usually between 200 watts and 600 watts, for home and office computers. EPS power supplies, on the other hand, have a wider power range of several kilowatts or even more, and are suitable for large servers and workstations, which require higher power supply power when processing large amounts of data and running complex applications.Motherboard Graphics Card

In addition, ATX power supplies and EPS power supplies differ in terms of power supply interfaces. ATX power supplies typically use a 20+4-pin primary socket, which is compatible with motherboards of different sizes, while EPS power supplies have more interface options, such as using an 8-pin or 4+4-pin secondary socket, to provide higher power capacity and better power stability.

ATX power supplies and EPS power supplies also differ in terms of power supply fan design and heat dissipation. Generally speaking, ATX power supplies usually adopt a single fan design which is located at the rear of the power supply for heat dissipation and cooling. While EPS power supplies usually adopt a dual-fan design, one located at the rear of the power supply and one at the top of the power supply, to improve heat dissipation and ensure that they do not overheat when running at high loads.

In addition, ATX power supplies and EPS power supplies differ in terms of power supply efficiency. In general, EPS power supplies are more efficient than ATX power supplies. An efficient power supply maximises the conversion of electrical energy and reduces power loss, thus saving energy and reducing electricity bills. For high-performance servers and workstations, using an efficient EPS power supply provides a more reliable power supply and reduces the risk of system failure.

Overall, ATX power supplies and EPS power supplies are both power supply devices used in computer systems, and they have some differences in terms of power range, interface design, cooling solutions and power efficiency. According to specific needs and application scenarios, choosing the right type of power supply can better meet the needs of the system and ensure system stability and reliability.