Weird sound in my case

A-Gru

Reputable
Aug 13, 2015
39
0
4,530
i5-4690
evga 970 ssc

when i press shutdown i think i hear the sound of the gpu turning off [it's like a something gets down] you know like a jet landing it begins high then drops down slowly and i think this is usual because the pc is about to shutdown, but why am i hearing that while browsing the web, or browsing my pc or even gaming? i'm not sure if it is the GPU but what else could make that sound?
 
Solution
Use a rolled up paper tube as a stethoscope to pinpoint the noise.
A gpu will respond to varying demands.
With higher demands will come more need for the fan to spin up and cool the gpu.