At the moment they are the latest release so folks are going to keep a close eye on them and it doesn't help the 5090 TDP is only 25W less than what the connector is rated for. Now that doesn't take into account how much power is coming from the PCIe slot but that's still mostly virgin territory for this connector. Doesn't take much OC to get it to top off at 600+ Watts. I was doing some reading on the weekend about 4090 BIOS and many top out in the 530-580 range with some allowing the max 600. The most I've seen mine hit is ~526.7 and I confirmed that it's BIOS has the 530W limit.
The black screen stuff, well, that'll probably go away just like most similar occurrences did for the 20 and 30 series but this connector still manages to be on a lot of folks radar. At this point though, I'm more curious what NV is planning for the next flagship since this one is already so close to the max rating. I agree with NV that 8-pin needs to be replaced as it was already getting ridiculous having 3 of them on some cards and doing 4 or 5 seems crazy but while I've had good luck with this connector it doesn't mean that I'm not more than a little concerned about what the future holds. Next node ought to use less power but who knows how hard they'll push it out of the gate.