After introducing the 16-pin 12VHPWR connector as new in some new GeForce RTX 40 series models, and experiencing some issues with it, NVIDIA has to change the standard for the new 12V-2 x 6 power connectors. Egor LabHey PCI-SIGThe consortium responsible for defining PCI buses is revising the specification.
The international site has shared some engineering changes from the upcoming CEM 5.1 specification that will serve as the basis for the ATX 3.1 standard. With the new 12V-2 x 6 connector, maximum power will be 675 watts, with 600 watts for the connector and 75 watts for the PCIExpress expansion slot. Previously, in the 12VHPWR standard, the maximum power was 600 watts, 525 watts from the connector and 75 watts from the slot.
There are a number of changes to the structural requirements for the new power connector compared to the 12VHPWR, including significant changes to the socket and plug. In appearance, though, the socket may look quite similar to those less familiar and the number of contacts remains the same, with 12 carrying the largest power and four smaller sockets that detect sideband signals.
Thus, PCI-SIG included tagging. The new 12V-2 x 6 connectors will have an H++ identifier, the previous 12VHPWR identifier with an H+ identifier.
The advent of NVIDIA’s RTX 40 series as a novelty brought the inclusion of a cable with a 16-pin connector in the GeForce RTX 4080 and GeForce RTX 4090 models. Damages to the power plug On video cards due to overheating.
The situation caused a series of developments that PCI-SIG even asked GPU manufacturers to enhance tests with connectors to ensure user safety.
source: Egor Lab via: tom devices
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