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Pure 12V PSU Standard, Named ATX12VO, Debuts Later This Year

Back at CES, at the FSP booth, we spied an inconspicuous-looking PSU with a curious 10-pin connector in place of the 24-pin ATX. The FSP500-30AKB turned out to be the first public exhibit of a the pure 12-Volt PC power supply standard being pushed by Intel, which is called "ATX12VO," which abbreviates Advanced Technology eXtended 12-Volt Only. According to the specification, the PSU only puts out +12 V and 12 Vsb voltage domains, and does away with the 5 V, 5 Vsb, and 3.3 V domains. This greatly simplifies the design of PSUs, as PCs of today don't use too many power-hungry 5 V or 3.3 V devices (such as half-a-dozen mechanical hard drives). The PC will still need 5 V for interfaces such as USB, but VRM on the motherboard will be responsible for DC-to-DC switching of 12 V to those lower-voltage domains. It's also likely that the motherboard will now put out a handful SATA power connectors.

Intel could debut ATX12VO within 2020 via its next-generation desktop platform, which features a 10-pin connector instead of 24-pin. It remains to be seen if the company could help the transition from current PSUs to the new standard by having its motherboard partners include a 24-pin to 10-pin adapter of some sort. In addition to the 10-pin connector, ATX12VO PSUs will put out two other purely-12 V connector types: 8-pin/4+4 pin EPS and 6+2 pin PCIe power. The EPS connector powers the CPU VRM, while the PCIe connector powers add-on cards, such as graphics cards. 4-pin Molex connectors could also be put out, but those will only feature 12 V pins (the 5 V pins will be absent).
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