Question for all you #nvidia #gpu pros out there. My #gaming PC has an Rm850x Power supply stating to be capable of 600W 12V 2x6 via 2x8pin connector. Seems sufficient for say an RTX5080. The RTX5080 itself comes with an adapter connecting 3x 8pin to one 12V HP connector. Should I be using (hypothetically) the adapter coming with the GPU and connect it to three cables coming from the PSU or would the two lines on the pic in my hand be sufficient?
Hm i would decide to buy a new PSU with native 16 12V-2x6 support so that a Adapter isn't needed.
If this isn't a option i would choose to use the nvidia Adapter because than the power can split between 3x 8 Pin which should result in a lower usage of the 8Pin cables.
The question is IMHO: Would the PSU use the marked as "free" 8 Pin too if the 3x 8 Pin adapter is connected?
I'm not sure about that.
@the_white_wolf good question! Hmm…
Mayby it would work with the 2x 8Pin to 12V 2x-6 but tbh i wouldn't have a good feeling about it.
Yes it could be that i'm overcautious but i believe with these high end card you can't be to cautious enough.
@the_white_wolf well I think that the adapter should work. After all it’s meant exactly for this usecase of PSU not having a dedicated port…. Power wise the 5080 should draw well below 400W so risk should also considerably lower than for a 5090. 
Yes i think, too the nvidia adapter is the best solution in this case
@the_white_wolf I had planned with a 1000W PSU but my 850W unit is perfectly fine and would even run more efficient I guess.