Hi, I'm not sure why, but on my new build the stock cpu fan is rather noisy, even at 1000rpm (the lowest it goes - I have it on silent configuration in BIOS!). Do you think it could be defective, or do you have any suggestions? It definitely is the cpu making the noise, not the gpu or psu. Thanks in advance Will
More about4670k stock fan noisy
Probably just a noisy bearing in the fan...stock coolers are noisy to start with, so it wouldn't take much of an imperfection to make it pretty audible.
I've got a 3570k stock fan, which probably isn't very different from it, but it's nearly silent at max