Re: Coil Whine after last "performance" update
It could be a number of things....such as..
Time to clean your PC and Vcard of dust and re-grease / lube your fans.
You may be reaching a slightly higher temperature due to your Video Card's increased performance due to the update, ergo increasing your fan speed; You can adjust this manually if you like using things like MSI Afterburner and tweaking the fan speed.
It may just be the change in seasons and your room is now warmer due to either summer temperatures or the heating in your room for winter.