Yep, there was definitely coil whine from the GPU using an SFX PSU (Corsair SF600 as a placeholder in this instance).
No, but I would imagine that would also shave a few degrees. I'm debating on using Kryonaut eventually. Also keep in mind the hot ambient (it's summer here) and subtract 3 degrees for a typical environment.
Thank you for the kind words!
- I used MSI Afterburner with the voltage/frequency editor (Ctrl+F to bring it up). There are guides on OCN and Reddit. You don't need the EVGA BIOS. This will work on any Pascal Nvidia card. The "L" key locks the frequency at the voltage you select, but I didn't need to do that since the card was steady the entire time during Heaven. It down clocks nicely afterwards at the desktop too.
- Every chip is different so you'll have to try it. For example, some people can do 0.900 V at 1900 MHz, while I needed 0.950 V.
- Yes, MSI Afterburner.