During the CES 2020 show, the FSP put out a very strange power supply, with only 12V output circuitry, without the traditional 5V, 3.3V, and the main power supply interface changed from 24 to 10 pins. It turned out to be Intel’s new pure 12V power specification, “ATX12VO” (O for Only), and the biggest change in power design specifications since 1995, which will revolutionise the face of this DIY core component.
ATX12VO specification completely eliminated the traditional 5V, 3.3V, only 12V output circuit, by it is unified responsible for the motherboard, graphics card, hard disk, peripherals, etc. for power supply, while the 24-pin main power supply interface changed to 10 pins, usually in the CPU socket near the 4-pin EPS auxiliary power supply interface is changed to optional, Even the 5VSB (Standby) output, which is used to keep USB devices powered and wake-up, has been changed to 12VSB, although the USB output voltage is still 5V.
12V to other lower voltage conversion is all handed over to the motherboard, such as hard disk, sSD, optical drive and other 5V inputs, are obtained from the motherboard, for which the SATA interface next to the addition of a SATA power supply interface.
Huge 24-pin power supply, bye.
The new 10-pin main power supply interface pins are defined as follows, with the 8th, 9th and 10th pins being used for the power output and voltage sensing of the 12V V1 DC, the 7th pin for the .12VSB, and the 1st and 5th pins using the anti-dull design.
Under the new power specification, both the power supply design and the motherboard design will be greatly simplified, and the overall cost will be significantly reduced.
For the past 30 years, power supply design has focused on AC-12VDC conversion, and then converted to 5V, 3.3V, and after removing the latter step, it is natural to improve the efficiency of power conversion and reduce waste.
Motherboard can also be unified management power supply design, reduce the use of material components, and in the past, the motherboard manufacturers, such as the power conversion will also be included in the unified specification, the platform is better.
Intel ATX12VO power specifications have been developed and made public, and the products will be available later this year, but initially only for the OEM and the entire machine market, and the retail channel promotion schedule is not yet known.