What are the classifications of pc power supplies?

Last Update Time: 2019-08-09 10:47:46

Pc power supply

The PC power supply is a device that supplies power to the internal components of the chassis, such as motherboards, drives, and graphics cards. At present, PC power supplies are mostly switching power supplies.


Pc power classification

1, ATX power supply

The ATX specification is an industry standard proposed by Intel in 1995. Today, the ATX architecture power supply has become the mainstream standard in the industry. ATX is the abbreviation of English ATExtend, which can be translated into "AT extension" standard, and ATX power supply is the power supply designed according to this specification. Household computer power supplies currently on the market generally follow the ATX specification. The standard size is 150x140x86mm.


2, PC / XT power supply

IBM first introduced the standard when it came to personal PC/XT machines.


3, SFX, CFX, LFX power supply

SFX power supply, CFX power supply, and LFX power supply are the same as WTX power supply. They can be said to be variants of ATX. They all have their own specifications in terms of size and power. They are all compatible with BTX power supply and now compatible with ATX series motherboards. These power supplies are designed to meet the requirements of small-sized chassis without the need for a separate graphics card and small size, so that you can purchase different chassis and other accessories when you assemble your computer. The CFX12V is suitable for chassis with a total system capacity of 10 to 15 liters; while the LFX12V is suitable for chassis with a system capacity of 6 to 9 liters. Currently, there are 180W and 200W specifications; the SFX power supply has a size of 125x100x63.5mm.


4, EPS power supply

EPS power and emergency power supply (UPS) are completely different concepts. Beginning in 2002, with the development of the digital age, the SSIEPS standard for powering the new WorkStation and server chassis emerged. The motherboard power supply specified by the standard ATX2.03 of the ATX power supply is 20 pins, and the CPU power supply is 4 pins. The characteristics of EPS are 24pin motherboard power supply and 8pin CPU power supply. So now I often see the motherboard power supply is 20+4pin, the CPU power supply is 4+4pin ATX power supply is actually an extension of ATX power supply, the correct name should be “ATX/EPS”.


5, AT power supply

It was also the standard proposed by IBM when it first introduced the PC/AT machine, which was able to provide 192W of power supply.


6, BTX power supply

The BTX (Balanced Technologye Xtended) power supply is a PC power supply designed to comply with the BTX standard. Can be understood as a variant of intel for the convenience of brand machine manufacturers. The BTX power supply is compatible with ATX technology. Its working principle and internal structure are basically the same as those of ATX. The output standard is the same as the current ATX12V2.0 specification. The power output requirements and interfaces support ATX12V, SFX12V, CFX12V and LFX12V. Although this type of power supply and the previous power supply have not changed in technology, in order to meet the size requirements, an irregular appearance is adopted. Currently, 220W, 240W, and 275W are defined. Among them, 275W power supply adopts independent dual +12V output. BTX is not an innovative power standard relative to ATX.


7, WTX power supply

The WTX power supply (WorkstaTIonsTX) is the workstation power supply, which is between the server and the home machine. It can also be understood as an enhanced version of the ATX power supply. The standard proposed at the time due to the emergence of PenTIum III Xeon (Slot 2). It is larger in size than the ATX power supply, and its power supply capability is stronger than that of the ATX power supply. It is often used in servers and large computers. The WTX power supply is one of the architectures of the IA server power supply.

If you want to know more, our website has product specifications for power supplies, you can go to ALLICDATA ELECTRONICS LIMITED to get more information