Dramatic video of magic smoke being released - Skip to the last 30 seconds
TechPowerUp
Gigabyte
SweClockers
Still looking for an official Gigabyte US release of this info, but a Google translate gives a recall for the:
GA-X79-UD3
GA-X79-UD5
G1.Assassin 2
Apparently if you're not willing to part with your board they have a newer BIOS that limits the operational draw of the board instead.
Edit: Some of the translated rumbling imply this little pyrotechnic display also killed the 39030K in the board. :(