I'm using an MSI SUPRIM LIQUID RTX 5090 and I'm curious if this particular GPU has any problems with cable melting. If it does, what are the best ways to avoid this issue?
3 Answers
Since the RTX 5090 is still relatively new, not too many people have reported cable melting with it just yet. However, undervolting is a good option to decrease the chances of melting down the line. The combination of high power draw from this GPU and some potentially faulty 12V-2x6 power connectors could be the root of the issue. If you're looking for more info, check out this undervolt guide: [Undervolt Guide](https://www.reddit.com/r/nvidia/comments/1jaz2yq/5090fe_undervolt_guide_better_than_stock_at_450w).
The melting issue isn't just tied to the RTX 5090, but more about the design of the power connector itself. One way to mitigate this risk is by undervolting the GPU, which helps lower its power draw. Also, make sure the 12VHPWR connector is seated properly—check that the latch clicks in completely and that connections on both ends are secure.
Just to clarify, Nvidia didn't actually design the 12VHPWR connector; it was PCI-SIG and Intel. However, Nvidia’s power demands in the 50 series certainly didn’t help matters.
Is there a 12VHPWR connector that can handle higher voltage and won't melt? Undervolting isn't ideal for me since I want to keep the performance.
There's no guaranteed fix for this yet, but you can look into buying a WireGuard to alert you of any issues. Alternatively, keeping an eye out for the upcoming Seasonic OptiGuard PSU may help, as it is designed to shut down the system before any connectors melt. Better safe than sorry!
Would it be possible to find a robust 12VHPWR connector that could prevent melting? I'm not too keen on undervolting since I want to maximize my card's performance.