There's nothing in the manual about it, sry 😞
Sounds like a power supply issue, you must have 3 green lights showing which means there's enough power to the card to run stable.
I use a Corsair AX-1200 power supply.
Also, I've been running the card with memory voltage at 1520 (1.52 volts) using GPU Tweak advanced to keep it stable.
Hope that helps 😉