The adapter receives all power from the system board.
Asus showed the GeForce RTX 4070 Megalodon video card, which lacks additional power connectors.
Recall that the TDP of the Nvidia card is 200 watts, and the PCIe slot can only transfer 75 watts of power. But in the case of the graphics card shown, the absence of the usual power connectors does not mean that Asus has managed to reduce the consumption of the RTX 4070 to 75 watts.
Asus showed GeForce RTX 4070 without a single usual power connector
The card has the ability to receive additional power, it’s just implemented in a new way. As you can see in the photo, an additional interface near PCIe 4.0 is used to supply power. Of course, such a solution is not compatible with all conventional motherboards, as it is a proprietary solution.
The interface is capable of supplying 600 watts of power to the card, so it can be used with any modern graphics card. Asus offers to connect such an adapter to the Z790 TUF Gaming motherboard in a special modification, which just has the right slot. By the way, there is a 12VHPWR connector on the motherboard, through which power is supplied to the video card.
So far, Asus is calling the new connector GC_HPWR, but by the time of launch, it will come up with a normal name. Yes, Asus is going to promote such solutions on the market, so this is not just a concept. The novelties will go on sale, however, only at the end of the year.
It is worth noting that AMD Radeon Pro accelerators for Apple Pro also have a similar power management solution.
