Baasha
That means the 4090 would need just 2x 8-pin connectors from the PSU? I thought the adapter has 3x 8-pin for the 4090? I know the 'extra' 4-pin plug on the 12-pin side is just for comms from the GPU to the PSU but as far as power delivery is concerned, especially when OC'd, would the 2x 8-pin connectors from the PSU be enough for the 4090 (when OC'd)?
We need an OFFICIAL answer from EVGA. I have the EVGA 1600T2 PSU (2 of them actually) and a couple of PerFE cables that I use with the 3090 Ti's.
Will the PerFE cable suffice for the RTX 4090 (Founder's Edition) and will the 1600T2 PSU work properly with this GPU?
I’ve already done a tear down of the 3x8 pin to show that in the end, there is only two cables worth of wires connected to the 12 pin side. The quantity of cables powering the card with 3 connectors versus two does not change, there is still only 12 cables overall going to the 12 pin. This is why the PerFE cable works fine for the 3090ti and will likely be exactly the same for the 4090.
Changing the male connector to a smaller pin, and the female connector to a smaller pin isn’t going to suddenly make a 16awg wire handled hundreds of watt as more. 12 cables is 12 cables, no matter how you look at it. Two 6 pins from the PerFE cable is going to be the same as 12 cables from a 12 pin. The only difference from the Standard 8 pin and the PerFE cable is that instead of 5 ground and 3 positive, you are getting 3 ground and 3 positive like the 12 pin uses respectively. The 4 sense pins are just ground for the card to think it has a 12 pin, there isn’t actual information exchange to tell the GPU or PSU that the proper hardware is being used.
NVidia patented a connector so the change they wanted to see, and changed the rating of the same size cable that was already in use. As long as you have a sufficient power supply, you should be perfectly fine.
https://forums.evga.com/FindPost/3573703