With the release of Intel’s new ATX12V power supply design guide, they’re revealing a range of PCIe 5.0 12VHPWR Power Connectors (150 to 600 Watts). These connectors will offer higher frequencies and more stable voltages for enthusiast gamers who have been crying out for better performance than that offered by older generation components.
GIGABYTE (photo credit: GIGABYTE)
A few pages from Intel’s new ATX12V v3.0 design guide have leaked, giving enthusiasts a better idea of what to expect from the next generation of PCIe 5.0 power supplies, which promise increased power delivery via a single new connection termed 12VHPWR.
While it’s previously been established that this connection can supply up to 600 watts of power, Intel’s guide also seems to indicate that there will be a variety of PCIe Gen 5 connectors and power cables to choose from, ranging from 150 to 600 watts. After upgrading to their gleaming new PSUs and next-gen graphics cards, users will definitely want to double-check their connections, since labeling seems to be the only meaningful distinction.
pic.twitter.com/j4TDqTt6lx 12VHPWR Cable Plug Connector
1 March 2022 (@momomo us) — 188 (@momomo us)
A section of the datasheet also confirms that the 12VHPWR power connection is incompatible with auxiliary power connectors numbered 23 or 24. The new connection, for example, has different spacing.
pic.twitter.com/Y4YEjrDOIT
1 March 2022 (@momomo us) — 188 (@momomo us)
(Tom’s Hardware) Intel’s ATX v3.0 PSU Standard Provides More Power for GPUs.
The ATX12V v3.0 introduces the following key changes:
- Up to 600W may be delivered using the new 12VHPWR connection for Add-In Cards (such as GPUs).
- The maximum power supplied by the 12VHPWR should be indicated.
- To comply with the latest ATX specification, all PSUs with a maximum power of greater than 450W must contain 12VHPWR connections.
- The PSU transmits its power capabilities to the PCIe card through sideband signals, allowing the latter to adjust its power limit appropriately.
- PSUs should be able to switch on and off 175,200 times in a year without failing!
- Low-load efficiency changes. For 10W or 2% of max-rated capacity, a minimum of 60% is necessary, while a maximum of 70% is recommended.
- For compatible PSU systems, increased tolerance for big power surges. With a 10% duty cycle, up to 200 percent of the PSU’s rated power may be used for 100s.
- Slew rates for transient loads have been increased (2.5–5 times for the +12V rail).
- To allow for smaller voltage dips, the 12V rail may be increased to 12.2V.
- Load control limits for the +12V rail have been increased (+5% to 8% on PCIe connections and +5% to 7% on other connectors).
- Changes in the Power On signal’s speed to enable for quicker reaction and system wake-up, even when the rails aren’t at zero but somewhere in the middle.
- Alternative Low Power Modes (ALPM), formerly known as Alternative Sleep Modes, have efficiency and design constraints.
- T1 and T3 timings, among other things, should be included on the PSU labels.
- Apart from 80 Plus, a new certification standard, Cybenetics, has been added to the references section.
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