A new form of power supply for graphics cards is coming, as the PCIe 5.0 with 12VHPWR connector will also come in accordance with the ATX 3.0 standard. Instead of connecting several 6- or 8-pin cables, in the future only one connector may be sufficient for the required power. But this means that a new power supply is required if you want to buy a next-generation AMD or Nvidia graphics card.
We already reported about the new 12VHPWR connection in October 2021, which will be launched together with the PCI-Express 5.0 standard for future GPU generations. Graphics cards themselves are becoming more and more efficient, but somehow they are also becoming more power hungry in terms of power consumption. So that you don’t have to put four or more 8-pin connectors on a graphics card in the future, the tech industry seems to have a new connector on its starting blocks.
Answers the plug name “12VHPWR” (12 Volt High Power) And probably for the first time on Nvidia GeForce RTX 4000 series AMDs as well Radeon RX 7000 graphics card Used. Since Intel is responsible for, among other things, defining the ATX standards, the desktop variants of the Arch GPUs could possibly have new connections – but that’s just a guess at the moment.
Power: 600 watts max through a plug
As Intel’s official documentation shows, the new connector Specified in four performance levels. According to the ATX version 3.0 guide, the connector can Up to 600 watts max distribution, but only provides 150, 300 or 450 watts. This is made possible by a binary configuration of Sense0 and Sense1 sideband signals.
When both signals are grounded, the GPU is initially supplied with 375 watts during system startup, and a maximum of 600 watts is supplied as continuous power according to software configuration. With both signals “open”, the graphics card receives 100 watts initially and a maximum of 150 watts (see graphic).
However, the new 12VHPWR connector is not “compatible” with previous standards (ie 6-pin and 8-pin). The connection is total 12 contacts for power transmission My max is 9.2 Amps including temperature monitoring As well as four additional contacts for “sideband” signals. Additionally, the distance between individual pins is 3mm, much smaller than the 4.2mm in previous ATX connections.
PCI-SIG, the PCI Express standard specification consortium, has now announced that the ATX 3.0 standard can work with or without the 12VHPWR connector. However, it also warns against the use of adapters, which would then become necessary.
how Wccftech Reportedly, this can lead to uneven load distribution and alarming temperatures – which can also be a fire hazard. The 6/8-pin connector can (theoretically) provide a maximum of 75 or 150 watts, but up to 600 watts is possible with the 12VHPWR connector. Even a 3 adapter (ie 3x 8-pin to 1x 12VHPWR) can exceed the specification with a load of 450 or even 600 watts.
New power supply is already being planned
Power supply manufacturers are already preparing and equipping for the new standard The first model is already with fresh connections From, for example from Seasonic with the new Prime model or from MSI with MEG Ai1300P PCIe5. Other companies may follow suit in the next few months and will likely provide more details about the ATX 3.0 standard.
Calm is in the middle of new developing Dark Power 13th Generation, which is set to go on sale early next year Updates to other power supply series related to the ATX 3.0 standard are also planned. But there will be cable from October 2x 8-pin to 1x 12VHPWR to give, which, among other things, in Calm down spare parts store Will be available for about 20 euros.
This adapter is compatible with all current B Quiet power supplies except the Pure Power 11, Pure Power 11 CM and System Power 9 series PSUs. A power supply for the GeForce RTX 4090 is included. At least 850 watts of power is recommendedFor GeForce RTX 4080 (12 GB/16 GB) should be at least 750 watts.
Update #1 (13. October 2022): Keep calm adapter
It has already been announced 12VHPWR adapter cables are now available to cool down. At least the manufacturer announces the availability in a press release, even if the cables are not yet available at the time of this update Accessories store can be ordered. Instead, there is an option to be notified when availability occurs.
The 12VHPWR adapter cable is compatible with all current modulars as long as they provide quiet power. At least two 12-pin PCIe connectors With a black sleeve of its own, the cable is also intended to be a visual alternative to the plain standard adapters that come with new graphics cards. Also ATX 3.0 compatible power supply Cool is already in the works: the Dark Power 13 series is slated to appear in early 2023, followed by the Dark Power Pro 13 series soon after. The manufacturer’s other power supply series will be revised for ATX 3.0 compatibility “in the near future”.
Update #2 (March 14, 2023): Correction 2.01
Intel now has design guidelines ATX 3.0 standard in version 2.01 There are now two different designs for the published 12VHPWR connector, with Intel recommending a second variant with four spring contacts instead of three recesses. Both approaches are probably mechanically compatible with each other, but the spring variant is intended to ensure better current flow and lower temperatures in the contacts.
Update #3 (September 19, 2023): Revision 2.1 with new 12V 2×6 plug
Coming in a few months Revision 2.1 For ATX 3.0 standard. Apart from some fine-tuning, there is one big innovation: the 12VHPWR connector is being replaced by a 12V 2×6 connector, which has an identical structure and is still compatible with the current GeForce RTX 40 graphics card.
Since the new plug is finished Short sense pin The main goal is to increase security. Only the four sense pins detect how much power the graphics card can draw from the power supply – and if these pins aren’t fully plugged in, maximum performance won’t exist. This is intended to prevent the plug from fully seating in the connection and resulting in overheating due to insufficient contact.
Original message for September 29, 2022
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