Intel Introduces ATX 3.0 and ATX12VO 2.0 Standards, 12VHPWR 600W Power Connector for Next-Gen GPUs Now Official


Intel introduces new ATX power supply specifications

ATX 3.0 and ATX12VO 2.0 support next-generation hardware power demands.

What’s new: Intel has released the industry’s most significant power specification update since the original ATX 2.0 specifications were introduced in 2003. The updated ATX 3.0 specifications unlock the full power and potential of newer hardware. generation and future components designed for technologies such as PCIe Gen 5.0. Intel also revised its ATX12VO specification to provide the PC industry with an updated blueprint for designing power supply units (PSUs) and motherboards that reduce idle power consumption, helping customers to reduce electricity demand.

“The ATX 3.0 and ATX12VO 2.0-based power supplies will ensure anyone looking to get the most stable, economical performance possible with the highest power efficiency from their desktop PCs will be able to do so – now and in the future. ‘to come up.”

–Stephen Eastman, Intel Platform Power Specialist

what he understands: Major additions to the ATX 3.0 / ATX12VO 2.0 specifications include:

  • A new 12VHPWR connector will power most, if not all, future PCIe 5.0 desktop expansion cards (e.g. graphics cards). This new connector delivers up to 600 watts directly to any PCIe 5.0 add-on/graphics card. It also includes sideband signals that will allow the power supply to communicate the power limit it can provide to any PCIe 5.0 graphics card.
  • The new guidelines reflect the PCIe CEM Gen 5 power excursion limit for PCIe 5.0 expansion cards which was released in November 2021. The updated specifications include new DC output voltage regulation which will be required to handle the new power excursion requirements.
  • ATX12VO 2.0 also adds I_PSU% functionality to desktop platforms, delivering Intel-driven innovation previously available on mobile and server platforms. This feature provides advantages for small form factor (SFF) systems that cannot use larger power supplies. It also offers cost savings to original equipment manufacturers (OEMs) because they are better able to select the right size power supplies to meet system requirements.
    Why it matters: With ATX 3.0 and ATX12VO 2.0 specifications, compliant power supplies coming to market will be essential for desktop users who want the best possible performance from their newer PCIe 5.0 desktop graphics cards. generation. These next-gen cards will be bigger and more powerful than before. Users will be able to optimize the performance of their system by having the appropriate power supplies.

Beyond system performance, the ATX12VO specification will be critical in helping the PC industry meet multiple government energy regulations. Recently announced regulations for complete systems, such as the California Energy Commission’s Tier 2 appliance efficiency requirements, require OEMs and system integrators (SIs) to use extremely low power levels to reduce the energy consumption of desktop computers. The ATX12VO specification is one of Intel’s efforts to improve the efficiency of OEM/IS systems and products for our industrial partners.

The new specs will positively impact improved power and performance across all desktop segments – from full-size towers to SFF systems – including a smaller connector, more flexible board designs, and power conversions. improved energy.

Future : MSI recently launched the first ATX12VO-based desktop systems – the Creator P100A and MPG Trident AS – which are powered by 12th Gen Intel® Core™ processors and an ATX12VO-compatible power supply.

Additional products based on the new ATX 3.0 and ATX12VO 2.0 specifications are expected to arrive throughout 2022.


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Alan A. Seibert