marcusrlsouza

If it's my mains is there something I can do to improve it? Maybe an UPS could "stabilize" the power coming from my outlet? I don't understand about this stuff.

I will try my PC in a different power network wednesday. I hope this gives me the answer. Thank you for your response.

Thank you for your response! Well, I live in Brazil, so I believe the electric power here is not the most reliable. I'm also thinking this could be something related to the power outlets (inside all my apartment, because tried 3 outlets here), because this is the second PSU that is giving me this buzz. But the strange thing is: with my old computer with a pretty cheap VS500 I never got this noise. I'm thinking trying my computer at my parents apartment to see if this stops.

Hello folks, I have the following build (listed below) except for the PSU, that was a Cooler Master MWE 600W 80+ Bronze. The Cooler Master PSU was "buzzing" randomly through the day since the day one. I tought it was an PSU problem (because sometimes de buzz happens even with the PC turned off, only with the power cable connected in the power outlet), so I've changed the PSU for a more powerful XPG 850W 80+ Gold with good reviews. I've reconnected all the power cables at the PC components (I've changed the PSU without rebuilding all the PC, just unplugged the old cables and plugged in the new ones, because I've felt it wasn't necessary to reinstall the MOBO, CPU, cooler, etc since the build is just 4months old). But to my surprise the buzzing continues even with the new PSU. After this I have disconnected and reconnected some cables/connectors, changed the position of some of them, trying to make sure the buzz wasn't coming from some wire of something. I've also tight up all the screws (PSU, MOBO, etc). Here is an audio clip (cellphone positioned at the back of the PC case, right where the PSU is located): https://clyp.it/dvlbo3ws (please turn up the volume and ignore the wind noise coming from the fans). Here is my current build: MOBO: X570 Aorus Pro CPU: Ryzen 7 3700X (stock) CPU Cooler: Scythe Mugen ARGB GPU: RTX 2070 Super Aorus (stock) RAM: 2x8GB Corsair RGB Pro 3200MHz Storage: 960GB Corsair MP510 NVme + 960GB Crucial BX500 SSD. PSU: 850W XPG Core Reactor 80Plus Gold Modular Case: Cooler Master MB530p Here is a 3DMark test: https://www.3dmark.com/spy/14450698 Any ideas for what is causing this buzzing noise? It's driving me nuts because even with just basic tasks this happens randomly. Sometimes it goes 1 hour without the buzz, sometimes it gives just 1 short "burst" (1 or 2 seconds) of buzz and it goes away for another 2 hours, but sometimes the buzz goes constant for 10~15 minutes. The PC is pretty silent when in full load! Since I've changed the PSU to the 850W one the GPU Coil Whine in full load has gone away.