Editor Mode High Pitched Noise

Rather odd as I’ve not had this happen before but when I switch to Editor Mode to view the terrain my computer emanates a high pitch frequency that changes as I zoom in or out. If I zoom far out then it stops.

Any idea what may be causing this and should I be worried?

Coil whine. I get it too. It’s from your graphics card.

No reason to worry unless it turns from a high pitched noise into something like a jet engine.

Ah k, I’ve noticed it for some time but didn’t bother to mention it till now out of curiosity.