Question Coil Whine After Downgrade GPU?

[gilang0821]

Before I use 1060 and never heard an odd sound, then I downgrade to 1050ti with no power pin, then every time I use it for gaming or basically, GPU reach 65-70 watts I sometimes heard a short faint whistling sound from my system.
My PSU is bequiet 500watt bronze, and my GPU is 1050 Ti StormX