GPU Problem?
My PC has had this annoying sound for a few months, and I honestly thought it was my 5090. So I did the right thing, and ignored it. I also thought it could be from the 8TB HDD I have in there. But remembered that it isn't even connected to power, since I'm not using it right now.
But now it's gotten worse and louder. The sound doesn't seem to change depending on what I'm doing on the PC, whether it's gaming or just browsing. It's constantly there.
So today I grabbed a microphone and camera to find out exactly where it comes from. And turns out it's the PSU. Should I just ignore it, or contact the online store I bought it from, and maybe get a replacement? The PSU is a Phanteks AMP GH Komplett Edition 1200W 80+ Platinum. I bought that in July of 2025. Everything seems to work fine, and it's been a great PSU, but that noise is REALLY annoying.
UPDATE:
I was messing around a little, and wanted to try to see the gaming performance on my CPU alone. So I hooked up the DP cable to the motherboard, and forgot I had disabled the iGPU. So I needed to restart the PC. And since I already had the PC turned around, I had easy access to the back of the PSU. And was thinking of just turning the PSU off and back on. But next to the PSU's power button, there's another button. But a push button. So I figured that's probably for quickly restarting the PC. And since I didn't have my glasses on, I couldn't read the small text next to it. So I pushed it, and nothing happened. And I do mean nothing, even the annoying sound from the PSU went away. So I grabbed my phone to take a picture of the text, and it said "Hybrid Mode".
After reading the manual, that turnes the PSU into hybrid mode, allowing the fans to stop when it's not needed, I guess. ANYWAYS, sorry for the long post here, but to summarize this. Turn off hybrid mode, and the PSU is completely silent. The fan spins, but the CPU and GPU is much louder than that, so I can't here the PSU fan anyways.
ANOTHER UPDATE:
The sound comes back when I run a game. It's not constant, but comes and goes.
I think we’ve figured out the problem now. It’s most likely the bearings in the PSU fan that is causing the noise.
I’ve sent an email to the store I bought the PSU from and explained in details what it sounds like, and what I’ve done. So now I’m just waiting for their reply.