Some things can create a humming sound, such as certain electrical devices, motors, or even specific types of machinery.
Some things can create a humming sound, such as certain electrical devices, motors, or even specific types of machinery.
It's hard to tell just from looking or hearing without extra details like visuals or sound quality.
Perhaps some sort of coil whine. In that case, consider yourself lucky it stays at just a humming sound. My RM 650 PSU sometimes makes a very annoying crackling noise when I play RDR2 (and only then.) Had to turn settings down lower than necessary or it would do it all the time. It could also just be a bit of fan noise. I'd advice you to open it up and try to identify the source. Perhaps just a low quality case fan or maybe the CPU cooler fan or GPU cooler fans..
It probably wouldn't be too great even if i recorded it somehow. I mean i can hear the noise but only if i lean my head lower towards the back of the PC and when my head is about halfway there. I doubt my phone would probably be able to record anything - i mean this might be just me having good hearing that's why i'm able to hear it but when i need to hear it i have to lean low like more than halfway the distance towards the PSU. I was hoping to find out if it's something serious or not ? I read online that this can be caused be either PSU or MOBO but to be honest i have no clue in this case.
The PC case is a Cooler Master MB511 RGB product. It’s also open, allowing you to see what’s inside. The sound you’re hearing might be faint, but it becomes noticeable when you shift your head toward the back of the PC and move closer to the power supply unit.
Checking the side door of your PC might help you pinpoint where the noise is coming from. It could be connected to a fan or another part, and turning off the case door can make the sound more audible and clearer by removing obstructions. You probably won’t notice anything major, but we can figure it out together if you’d like.
The left glass panel gives better access to each part, allowing you to identify the component more easily (except for the PSU). By running benchmarks on individual parts, you can tell which one it is—like checking GPU coil whine. A GPU benchmarking tool will likely make fans spin and produce a whine, while CPU testing won’t. If it’s the PSU, the whine might appear only under heavy load affecting both GPU and CPU.
I already did that before with the glass panel off—probably you were thinking of a different panel. It’s hard to tell exactly where it came from, which is why I mentioned earlier. The spot I usually get the best sound from is when my head is slightly lowered, about halfway toward the PSU distance.
It seems like the rear case fan is likely the one you're referring to, or possibly the CPU or CPU fan. As workloads increase, fans speed up to dissipate more heat. Noise typically rises with heavier loads, which is normal. To minimize sound, using higher-quality fans can help keep noise down even at higher speeds.