Question HVPWR voltage - 0.1V drop in 1 day - is my card safe?

[Sindya]

Ive just built a new setup with these specs:
CPU - Intel i9-14900K
Mobo - Gigabyte Z790 AORUS Pro X
GPU - MSI 4090 SUPRIM X
PSU - EVGA SuperNOVA 1000 G+

The GPU is connected with a 16-pin 12 HVPWR cable and has the same 16 pin on both ends, as the cable came out from the PSU. Right after building it, the GPU kept crashing randomly especially on idle after 10 mins of use.
I realized it probably was the HVPWR cable slightly bent horizontally and pushed by the glass.
I pre bent the rest of the cable and now has plenty of room, no bending and is fully seated without tension nor pressure. No crash occurred anymore.

First day after this operation the HVPWR voltage sat on idle at 12.380-12.350. Under load 12.080-12.100
The second day, however on idle is at 12.230-12.260 that's more than 0.1 drop after a single day.
Bonus (there is a very very low coil whine - can't identify where from, both at idle and load)
Should I worry about the cable? Is this going to be ok or should I continue monitoring?
Photos of cable below
https://ibb.co/yFGfL0T
https://ibb.co/VJ3ffCM

 

[Lutfij]

Welcome to the forums, newcomer!

This would be a good read;
https://www.techpowerup.com/300229/...pwr-for-cable-management-it-will-burn-up?cp=4

 

[hotaru.hino]

First day after this operation the HVPWR voltage sat on idle at 12.380-12.350. Under load 12.080-12.100
The second day, however on idle is at 12.230-12.260 that's more than 0.1 drop after a single day.
Bonus (there is a very very low coil whine - can't identify where from, both at idle and load)
Should I worry about the cable? Is this going to be ok or should I continue monitoring?

As long as the output voltage on the PSU is within +11.40 V to +12.60, it's within the ATX spec. Though while it's important it's at this voltage while idling, it's even more important while there's a load on the hardware.

I'd say if you want to make sure things are OK, monitor the voltage for a month and see if anything significantly changes.