Nvidia’s RTX 4090 graphics card appears to be getting a third-party adapter that’s built with a right-angle design – we’ll explain more in a moment – from a major power supply manufacturer, as the card suffers more reports of melted cables.
Yes, unfortunately there have been two other reported cases of adapter cables melted with Nvidia’s official solution connecting the RTX 4090 to an ATX 2.0 power supply as per Tom’s Hardware reports (opens in new tab). Which brings the total to four incidents, with Nvidia having already said it is investigating the first report that has come to the company’s ears.
The supposed problem is with the 16-pin connector that needs an adapter (4 x 8-pin to 16-pin) to connect the RTX 4090 to an ATX 2.0 PSU (as opposed to an ATX 3.0 product, newer models on the scene that can use directly to the 16-pin connector).
Problem is, this adapter is difficult to fit into many PC cases as it needs to be bent at a sharp angle – and the pins not being seated properly as a result were seen as the most likely culprit for these alarming cases of cables melting. .
The theory is that having a right-angled power connector – one that can fit more easily into the PC case without needing to get stuck on the side panel (or close to it) – will mean less strain on the connector and less likely to not be seated properly. on the 4090 video card.
This solution is what Seasonic is apparently introducing, as seen on the Chinese forum Bilibili, a post that HXL flagged on Twitter (again via Tom’s Hardware (opens in new tab)). Add your own spice as always with sources like this.
Seasonal Interface 90° L-Type 12VHPWR pic.twitter.com/7J30Tt5B9NOctober 25, 2022
Analysis: A necessary visit to the caveat corner
Seasonic is not the first company to have this particular brain wave, as you may know. Cablemod has already showcased its 90-degree angled adapter solution, which should be available for pre-order in late October.
We still don’t know when Seasonic’s version of the right-angle adapter for the RTX 4090 will arrive, or even What if it will – remember, this is information extracted from Bilibili, so we should consider it very carefully. And the Bilibili poster further notes that it’s just a sample product (in the comments), so we don’t have any confirmation that it will be realized.
There are other caveats here too, with these types of third-party adapters. Keep in mind that Nvidia doesn’t allow the use of anything but the official adapter with the RTX 4090 – and resorting to an alternative void your warranty. That’s a serious problem there, of course.
Some people are also arguing that it’s not the angle of the cable, but the fundamental design of the connector itself that is the real issue in dealing with the power that can be swallowed by the RTX 4090. (Considerably over 450W with peak power usage , especially if you’re looking at overclocked custom models of the 4090, naturally). But if that connector isn’t up to the job, surely that would be something Nvidia’s testing would have found – or we hope it will.
And if the problem is seating the connector, the most prominent theory, surely a right-angle adapter would help at least a little in terms of mitigating any strain caused by having to bend a rigid cable?
This is all speculation at the moment, though, and we need official word from Nvidia on what’s going on with these troubling cases of cable melt, naturally. Hopefully this will happen soon, and equally, we can expect that we don’t get any more reports of this issue coming from other RTX 4090 buyers – as if that reality came to fruition, well obviously that would be very disappointing.
Meanwhile, AMD was quick to confirm that its upcoming next-gen flagship RDNA 3 will not use the same style of power adapter as the RTX 4090.