asus rog 2080 ti

Sooo.. this is gonna be a long one. I came across an old 2080 Ti of my friend, who recently upgraded his rig and asked me to look at his old GPU. When he used it (850W PSU dunno the brand, with a 3600x at that time) it worked as it should for about 2 years or so. Then it started going downhill...

I have just bought the new GPU and running benchmarks I've noticed this high pitched whining sound coming from the GPU, doesnt happen when idle, so my question is, does this mean that the gpu is broken and should i get a new one?